Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 307217: 3x^2+80=0
Click here to see answer by checkley77(12569)

Question 307264: What does it mean to refer to a 20-in TV set or a 25-in TV set? Such units refer to the diagonal of the screen. A 10-in TV set also has a width of 8-in. What is its height?
Click here to see answer by checkley77(12569)

Question 307265: Find all numbers for which the rational expression is undefined.
p^3 - 9p/p^2 -81
Click here to see answer by rapaljer(4667)

Question 307539: A car rental co. charges a daily fee plus a mileage fee. Joe was charged $429 for 5 days and 300 km., while Mary was charged 315 for 3 days and 500 km. What does the car rental co. charge per day and per kilometre ? Thanx for your help.
Click here to see answer by checkley77(12569)

Question 307607: What is the slope of x^2-9=0, x^2+5=0, 4x^2=0, 2x^2-8=0, x^2+16=0, x^2+7=7,
Click here to see answer by Alan3354(31518)

Question 307697: x^2 + 4 = 0
Click here to see answer by Alan3354(31518)

Question 307795: factor completely 45x^4+50x^3
Click here to see answer by rapaljer(4667)

Question 307826: Find the roots of each quadratic equation without making a table or a graph.
y=x^2+4x-5
Click here to see answer by scott8148(6628)

Question 307814: what is the intersection points of y= x^3-3x^2+x and y=x^2-3x
my concern is inputing x^3 into the quadratic equation
Click here to see answer by scott8148(6628)

Question 307828: Please help me solve this equation:
{x^2+x+sqrt(x^2+x)-2=0}

Click here to see answer by mananth(12270)

Question 307793: solve the following equation q: 2q+3/3+3q-4/6=q-2/2
Click here to see answer by mananth(12270)

Question 307877: By how much does the sum of the roots of the equation ( x + 1) (x - 3) = 0 exceed the product of its roots?

Click here to see answer by mananth(12270)

Question 307926: Y=x²+6x+8
Click here to see answer by Fombitz(13828)

Question 308022: what is the maximum or minimum value of the quardratic function ?
f(x)=3x^2+12x+8
a. -28
b. -4
c. -2
d. 44
tthanks!
Click here to see answer by Fombitz(13828)

Question 308022: what is the maximum or minimum value of the quardratic function ?
f(x)=3x^2+12x+8
a. -28
b. -4
c. -2
d. 44
tthanks!
Click here to see answer by rapaljer(4667)

Question 308046: How do I solve and graph a quadratic equation?
Click here to see answer by rapaljer(4667)

Question 308176: simplest radical form
1) a=-2 b=8 c=5
2)a=4 b=2 c=-5
3)a=4 b=-10 c=5
4)a=3/2 b=1/3 c=2/3
5)a=4 b=-.6 c=-.5
Click here to see answer by Alan3354(31518)

Question 308194: The directions are:
Factor each polynomial, if possible. If the polynomial cannot be factored using intergers, write prime.
The problem is:
12q^2+34q-28
Click here to see answer by edjones(7569)

Question 308296: It takes Meihua two hours more to complete a 50-km journey than it takes Ailin to complete a 40-km journey.If the average speed of Meihua for the journey is 5 km/h less than ailin, calculate the average speed for each girl.
Click here to see answer by mananth(12270)

Question 308334: If one solution to the equation x^2 – 3x + k = 0 is 4, then what is the other solution?
a) -4 b) -1 c) 1 d) 4 e) cannot be determined from the information given

Click here to see answer by rapaljer(4667)

Question 308327: Find the product of the solutions of this equation 15x^2+23x-41=0
Click here to see answer by Fombitz(13828)

Question 308326: Find the sum of the solutions of this equation 5x^2+3x+8=0
Click here to see answer by Fombitz(13828)

Question 308348: Find the x and y-intercepts. F(x)=25x^2+20x+4

Click here to see answer by Fombitz(13828)

Question 308383: how do i solve 12 x ² +19 x=21 by completing the square and using the formula a(x-h)²+k
Click here to see answer by Fombitz(13828)

Question 308383: how do i solve 12 x ² +19 x=21 by completing the square and using the formula a(x-h)²+k
Click here to see answer by CharlesG2(828)

Question 308428: Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard from; ax^2+bx+c=0,
Solution: 5, only solution.

Thanks!
Click here to see answer by rapaljer(4667)

Question 308462: Solve by completing the square.
x^2-18x=-106
Click here to see answer by ankor@dixie-net.com(15746)

Question 308520: I am trying to solve the following: x2 -4x -3 = 0. I can get as far as 4 plus or minus the sqrt of 28 over 2. I don't understand why this becomes 2 plus or minus the sqrt of 7. It seems to me that it should be 2 plus or minus the sqrt of 14.
Thanks. Marieann
Click here to see answer by ankor@dixie-net.com(15746)

Question 308793: Solve this quadratic equation using the quadratic formula.
x2 - 6x + 6 = 0

2x2 - 2x = 1

3x2 + 5x + 1 = 0
Click here to see answer by solver91311(17077)

Question 308861: How much water must be added to dilute 10 quarts of a solution that is 18% iodine so that the resulting solution will be 15% iodine?

Click here to see answer by stanbon(57967)

Question 308848: 3t^2 + 9t - 2 = 0
Click here to see answer by stanbon(57967)

Question 308764: One of the roots of the cubic equation x^3-4x^2+2x+4=0 is
A. 1+ the square root of 3
B. -1+ the square root of 3
C. -1+2 the square root of 3
D. 1+2 the square root of 3
Click here to see answer by stanbon(57967)

Question 308899: How is factoring used in solving quadratic equations?
Click here to see answer by unlockmath(1614)

Question 308934: y=3x^2-6
Click here to see answer by checkley77(12569)

Question 308887: 600,000An automobile dealer has 600,000$ invested in compact cars & mid sized cars....The profit on the sale of the compact cars is 1% and the profit on the mid sized cars is 16%....how much did the dealer invest in midsized cars if the overall profit on the total investement is 12%
Click here to see answer by checkley77(12569)

Question 308886: assume that i sell 66 sandwiches when selling them for $1. if i lose 5 customers each time i raise the price $.25, what is the price that will produce the higherst amount of sales? what is the amount of money i will bring in? solve using quadratics.
Click here to see answer by ankor@dixie-net.com(15746)

Question 308973: Solve.

Click here to see answer by jim_thompson5910(28715)

Question 309099: 14x^2=56x
Click here to see answer by profemmanuel2q(4)

Question 309140: the equation 2x-3x^1/2 + 1 = 0 has two solutions. The sum of the solutions is:
a 1 b 1/2 c 5/4 d 4 e 3/2
Click here to see answer by texttutoring(324)

Question 309144: solve by taking square roots 4p^2=36
Click here to see answer by texttutoring(324)

Question 308990: assume that you sell 65 sandwiches for $1 each. if you lose 8 customers each time you raise the price $.10 what is the price that will produce the greatest amount of sales? what is the amount of revenue that you will bring in? solve using quadratics
Click here to see answer by ankor@dixie-net.com(15746)

Question 309273: How do you find the axis of symmetry, the vertex point, the y intercept, and the zeros to graph a parabola?
Click here to see answer by stanbon(57967)

Question 309225: The height (h) of a baseball (t) seconds after being hit is given by h(t)= -16t^2 + 80t + 9. What is the height of the baseball when it is into the air? What is the maximum height of the baseball and when does it reach this height? When does the baseball hit the ground?
Click here to see answer by nerdybill(7003)

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, 20251..20295, 20296..20340