Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 65094: Find the factored form of y = 2x^2 + 6x + 4
2(x - 1)(x - 2)
(x + 1)(x + 2)
2(x - (-1))(x - (-2))
(x - (-1))(x - (-2))
Find the factored form of y = x^2 + 4
(2x - i)(2x + i)
(x - 2)(x - (-2))
(x - 2i)(x - (-2i))
(x - 0)(x - 4)
Find the usual y = ax^2 + bx + c form of the quadratic which has a = 1, and two zeros z = 3 and z' = 7
y = x^2 - 10x + 21
y = x^2 + 10x - 21
y = x^2 + 3x - 7
y = x^2 - 3x + 7
Find the usual y = ax^2 + bx + c form of the quadratic which has a = 1, and two zeros z = 2 + i and z' = 2 - i
y = x^2 - 4x + 5
y = x^2 + 4x + 5
y = x^2 + 4x - 5
y = x^2 + 4

Click here to see answer by stanbon(57352)

Question 65084: Please help to find x :
m/c - 3a + c/x = f
Click here to see answer by ankor@dixie-net.com(15652)

Question 65131: Please sold this problem.
The sum of 2 numbers is 28 and their product is 96. Find the numbers.
Click here to see answer by Earlsdon(6287)

Question 65130: Kindly sold this problem.
The product of two consecutive number is 182. Find the numbers.
Click here to see answer by Earlsdon(6287)

Question 65129: Please help me with my take home exam.

One computer can solve a complex prime factorization problem in 75 minutes.
A second computer can solve the same problem in 50 mins. How long would
it take both computer working together to solve the problems?

Click here to see answer by Earlsdon(6287)

Question 65106: Solve the quadratic equation using any appropriate method. 4(x+1)^2=64
Click here to see answer by 303795(595)

Question 65101: Graph the quadratic equation. y=x^2
Click here to see answer by 303795(595)

Question 65159: Hello,
how do i fint the vertex and intercepts for this quadratic function:
f(x) = x^2 - 6x

thank you!
Click here to see answer by josmiceli(9680)

Question 65159: Hello,
how do i fint the vertex and intercepts for this quadratic function:
f(x) = x^2 - 6x

thank you!
Click here to see answer by funmath(2925)

Question 65159: Hello,
how do i fint the vertex and intercepts for this quadratic function:
f(x) = x^2 - 6x

thank you!
Click here to see answer by cristiana(10)

Question 65091: Solve
(4 + 3x / 5) - 7/2 = 3
Click here to see answer by checkley71(8403)

Question 65237: ok here is my super dooper hard question ok ready?
a bus company has 4000 pasangers daily, each paying a fait of 2 dollars. for each 0.15$ increase the company looses about 40 passangers. if the company needs to tske in $10450 per day to stay in buisness what fare should be changed?
Click here to see answer by checkley71(8403)

Question 64833: PLease help to solve :
(-x + 2 / 3) - (2x + 5 / 4) = 5
thank you!
Click here to see answer by praseenakos@yahoo.com(507)

Question 65274: name the property that is shown in the following example: 8(zxy)=(8xz)y illustrates which of the following properties?
Click here to see answer by tanimachatterjee(60)

Question 63168: Use the Completing the square or Shortcut Method to find the Standard Form of the following quadratic function. Standard form: f(x) = a(x – h)2 + k
1. f(x) = x2 – 2x – 5 = __________________________

Click here to see answer by 303795(595)

Question 65312: Suppose a cannon shoots a cannon ball into the air so that the initial upward velocity of the cannon ball is 320 feet per second.Assume the cannon ball is shot from ground level.

H=-1/2*gt^+vt+h where g is the acceleration due to gravity, and on the earth, equals 32ft/sec^ (English units) or 9.8m/sec^(metric units,
v is the initial upward velocity of the object
h is the initial height above the ground
the question:
how high will the cannon ball be in 7 seconds?
and how do you figure it out?
i tried -16x^+320*7 because i thought this is what the solver was telling me to do...my answers were 2256,2224,2128,and 2352. None of these appear to be correct. I answered question #1 by guessing: in 5 seconds, the rocket will be 1200 feet above ground. The solution I came up with was 320*5=1600, 16*5=80,then add 320+80=400, then subtract 400 from 1600 to get 1200feet, which was the correct answer , but for question #2, i am wrong if i use the same pattern.
Click here to see answer by Earlsdon(6287)

Question 65325: how many seconds after the cannonball was shot will it first be 1000 feet high? and how many seconds will the cannonball next be 1000 feet? and how did you solve this?
scenario:suppose a cannon shoots a cannonball into the air so that the initial upward velocity of the cannonball is 320 feet per second.
formula: H=-1/2*gt^+vt+h where g is the acceleration due to gravity, and on the earth, equals 32ft/sec^, v is the initial upward velocity of the object and h is the initial height above the ground.
Click here to see answer by stanbon(57352)

Question 65412: (x+3)-2(x+4)=(x-4)(x-3)
Click here to see answer by Edwin McCravy(8909)

Question 65455: Can you please help me with this problem? I'm having trouble with factoring some trinomials. I tried to factor this, but I couldn't find anything that would go into 13 and 30. I don't know if that makes it prime, or if I'm doing it completely wrong. y^2+13y+30
Click here to see answer by stanbon(57352)

Question 65431: solve by factoring
56x + x^3 = 15x^2
Click here to see answer by checkley71(8403)

Question 65430: Solve by completing the square
3x^2 - 4x + 5 = 0
Click here to see answer by ptaylor(2048)

Question 65507: for 1980 to 1985, the anual sales S, in thousands of dollars, of a shoe store store can be modeled by S= -0.5t^2+3t+42, where t=0 represents 1980. question: A: During which years did the store have sales of more than $50,000? B: During which year did the store achieve its max sales?"
Solving it as a quadratic is not the real question here one can find
t = 3+/-(93)^1/2.
How is this quadratic set up to relate the Sales to the time period?
One can even find the vertex of the parabola as (3, 93/2)
There is a 5 year sales (earning) period involved
S does not relate well in solving for t
There appears to be a minimum for S when t=0 in 1980 of 42
Click here to see answer by josmiceli(9680)

Question 65433: Find a :
4x / 2y + 3a - p = c/q
Click here to see answer by ptaylor(2048)

Question 65605: Find b :
a/m = c(1/x + b/y)
Click here to see answer by praseenakos@yahoo.com(507)

Question 65590: Solve by completing the square :
7 = 3x - 2x^2

Click here to see answer by funmath(2925)

Question 65707: Solve the quadratic equation by completing the square:
2x^2 + 10x + 11 = 0
Can someone please help me out on this, thanks a lot!
Click here to see answer by uma(370)

Question 65710: Use the quadratic formula:
3x^2 - 2x + 1 = 0
Thank you for the help in understanding this type of problem !
Click here to see answer by uma(370)

Question 65709: Use the quadratic formula:
2x^2 - 5x = 3
Can someone please explain this type of problem to me, thank you so much!
Click here to see answer by Nate(3500)

Question 65709: Use the quadratic formula:
2x^2 - 5x = 3
Can someone please explain this type of problem to me, thank you so much!
Click here to see answer by funmath(2925)

Question 65706: Solve the quadratic equation by completing the square:
x^2 - 6x - 3 = 0
Can someone give me a heads up on how to solve this please?
Click here to see answer by Nate(3500)

Question 65719: Please help to solve :
4 = 3x^2 + x by using the quadratic formula
Click here to see answer by checkley71(8403)

Question 65718: please help to solve
(4x - 3 / 7) = (5 + x-2 / 3)
thank you
Click here to see answer by checkley71(8403)

Question 65720: please help to add
(x - 5 / x^2 - 5x - 14) - ( 2x / 7 - x)

Click here to see answer by chitra(359)

Question 64597: I really, really need help on this one..... The (-32x^2 over 310^2), in the equation below, is a fraction......
A projectile is fired from a cliff 200 feet above the water at an incline of 45 degrees to the horizontal, with a muzzle velocity of 310 feet per second. The height h of the projectile above the water is given by:
h(x)= (-32x^2 over 310^2)+x+200 , where x is the horizontal distance of the projectile from the base of the cliff. Find the maximun height of the projectile.
Click here to see answer by venugopalramana(3286)

Question 65773: Use the quadratic formula:
3x^2 - 2x + 1 = 0

Click here to see answer by checkley71(8403)

Question 65772: Use the quadratic formula:
2x^2 - 5x = 3
Click here to see answer by checkley71(8403)

Question 65772: Use the quadratic formula:
2x^2 - 5x = 3
Click here to see answer by funmath(2925)

Question 64521: Write in Standard Form. Find C: 2x = -4 + x2^
a) -4
b) 4
c) 2
d) -2
e) None of these
Click here to see answer by faceoff57(82)

Question 65809: Solve by completing the square
2x^2 + 2x = -3
Click here to see answer by uma(370)

Question 65815: Use the quadratic formula:
3x^2-2x+1=0
I need some seriuos help on this type of problem to understand the concept and how to actually write the answer in the right form, thank you
Click here to see answer by uma(370)

Question 65814: Use the quadratic formula:
2x^2-5x=3
Can anyone possibly help me understand this and how to write the answer in the correct terms. Thank you so much !
Click here to see answer by checkley71(8403)

Question 65808: Solve by using the quadratic formula
2x = 3x^2 - 3
Click here to see answer by stanbon(57352)

Question 65804: Find p : x+3 / p - m = c(a/b + x)
Click here to see answer by ptaylor(2048)

Question 65841: Begin with ax^2 + bx + c = 0 and derive the quadratic formula by completing the square
then solve x = -2 - 3x^2 by using the quadratic formula
Click here to see answer by funmath(2925)

Question 65844: Find x :
(x + z / a) = a(b/m + 1/c)
Click here to see answer by ankor@dixie-net.com(15652)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250