Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 323603: ( x + 4 )^2 = - 108
Click here to see answer by JBarnum(2146)

Question 323614: 40w^3-30w^2+5w
Click here to see answer by Alan3354(69443)

Question 323614: 40w^3-30w^2+5w
Click here to see answer by mananth(16946)

Question 323602: x^4 - 5x^2 - 36 = 0
Click here to see answer by Fombitz(32388)

Question 323500: an someone please help me with this :
Determine a symmetrical pair of points , calculate the coordinates of the vertex and sketch the graph.
y=x^2-6x+10
And please include the formula used to figure each answer.
Thank you.
Click here to see answer by Fombitz(32388)

Question 323621: give exact and approximate solutions to three decimal place
(x+2)^2=9
Click here to see answer by Fombitz(32388)

Question 323630: solve for x
x^2+12x+4=0
Click here to see answer by JBarnum(2146)

Question 323632: give exact and approximate solutions to three decimal places
x^2+14x+49=25
Click here to see answer by JBarnum(2146)

Question 323628: give exact and approximate solutions to three decimals place
x^2+5x-3=0
Click here to see answer by JBarnum(2146)

Question 323634: find the vertex, the line of symmetry, the max or min value of the quadratic function
f(x)=x^2-2x-3
Click here to see answer by nerdybill(7384)

Question 323678: 0.19= X^2^/(0.63-x)

get into quadratic equation and step by step how to???
Click here to see answer by JBarnum(2146)

Question 323622: f(x)=-3(x+1)^2
The vertex is (ordered pair)
the equation of the line of symmetry is x=
Click here to see answer by Fombitz(32388)

Question 323624: f(x)= (x+5)^2-2
The vertex is (ordered pair)
the min value is f(x) =
Click here to see answer by Fombitz(32388)

Question 323717: type an ordered pair. type an exact answer using radicals as needed. Rationalizeall denominators. Express complex numbers in terms of i. Use a comma to separate answers as needed.)
Solve by completing the square
x^2+3/2x=3
Click here to see answer by Fombitz(32388)

Question 323196: Multiply.
(w + d)(w^2 - wd + d^2)
Simplify.
Thanks.
Click here to see answer by Fombitz(32388)

Question 322858: elimination
2x-3y=1
3x-2y+6=o
Click here to see answer by Fombitz(32388)

Question 323631: Find the vertex, the line of symmetry, the maximum or min value of the quadratic function.
f(x)=4x^2-16x+19
Click here to see answer by Fombitz(32388)

Question 323719: Solve 3x^2-7x-11=0
Find the x intercepts of f(x)=3x^2-7x-11
Click here to see answer by checkley77(12844)

Question 322870: why can't different quadratic equations have the same solution?
Click here to see answer by Edwin McCravy(20054)

Question 323982: 7-7x=(3x+2)(x-1)
Click here to see answer by Fombitz(32388)

Question 323955: Simplify as far as possible 5a +a -2a
Click here to see answer by Fombitz(32388)

Question 323992: (5+sqrtx)^2-12(5+sqrtx)+33=0 solve
Click here to see answer by Fombitz(32388)

Question 324066: x-3/54-6x^2
this needs to be simplifyed
Click here to see answer by Fombitz(32388)

Question 324074: Solve by factoring:
x^2 + 2x �15 =0
Click here to see answer by stanbon(75887)

Question 324081: Can x (x � 5) = 0 be solved by dividing both sides of the equation by x?
Explain your answer.
Click here to see answer by Fombitz(32388)

Question 324090: ok so i was wondering in a quadratic equasion if a term is mssing what you replace it with.
for example 5x^2+5x=0
what do i putin the c term?
and 3x^2+3=0.
what do i put in the b term?
this needs to be solved using the quadratic method, so do i replace each term with 1 or 0?
Click here to see answer by Fombitz(32388)

Question 324078: Solve by using the quadratic formula. Show complete solutions.
3x (3x + 4) = -4
Click here to see answer by Fombitz(32388)

Question 324073: Solve by factoring:
4y^2 � 7y = 0
Click here to see answer by Fombitz(32388)

Question 324085: The sum of the squares of two consecutive integers is 613. What are the integers?
Let x be one integer. Therefore x +1 is the next integer.
x^2+(x+1)^2=613
Click here to see answer by Fombitz(32388)

Question 324075: Solve by factoring:
m^2-9/7=1
Click here to see answer by Fombitz(32388)

Question 324080: Solve by using the quadratic formula. Show complete solutions.
2 = 0.7n + 0.6n^2

Click here to see answer by Fombitz(32388)

Question 324138: A bridge uses a parabolic arch to support it as shown in the picture. The bridge is 100 m long and has a maximum height of 75m.
Determine an algebraic expression, in standard form, that models the shape of the bridge.
If you must drive 10 m on the bridge before you reach the arch, how high is the bridge above the water below ?
Click here to see answer by galactus(183)

Question 324208: I have been struggling with this problem:
x(x+6)=0
I just don't understand the steps to get the answer. Can you show me step by step to solve this? This problem was in a chapter for factoring. The only directions for this problem was to solve.
Click here to see answer by jim_thompson5910(35256)

Question 324192: I don't understand what each number in a quadratic equation represents. For instance, in the equation , I can't figure out what the 2 will show up as on a graph, or the 8. Can you please give me a breakdown of a quadratic equation?
Thank you
-Meli
Click here to see answer by checkley77(12844)

Question 324243: x2+x-3=3 solution
Click here to see answer by rapaljer(4671)

Question 324146: solve (x-1)^2=-49
Click here to see answer by Fombitz(32388)

Question 324194: I don't understand how to change a quadratic equation in factored form into one in expanded form, and the other way around, particularly when the equations get more complex. An explanation of how to do this would be much appreciated.
Thank you
-Meli
Click here to see answer by rapaljer(4671)

Question 324425: X^2-NY^2=0,X=?
Click here to see answer by Fombitz(32388)

Question 324449: What is the square root of m squared + 30m + 225
Click here to see answer by solver91311(24713)

Question 324504: I just don't get word problems! the two sides of a right triangle differ by one. If the hypotenuse is 29cm, then determine the lengths of the two sides. How do I solve using the quadratric formula.
Click here to see answer by jim_thompson5910(35256)

Question 324498: Help I'm lost! I need to solve using the quadratic formula. An airplane makes a 990km flight with a tailwind and returns, flying into the same wind. The total flying time is 3 hours 20 minutes, and the airplane's speed in still air is 600 km/h. What is the spped of the wind?
Click here to see answer by scott8148(6628)

Question 324550:

Click here to see answer by katealdridge(100)

Question 324573: I am trying to complete the square. Here's what I did:
x(2x+3)-1=0
x=2x+3+1=0+1
x=2x+4=1
x= (2,-2)
Click here to see answer by Fombitz(32388)

Question 324573: I am trying to complete the square. Here's what I did:
x(2x+3)-1=0
x=2x+3+1=0+1
x=2x+4=1
x= (2,-2)
Click here to see answer by stanbon(75887)

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, 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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, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240