Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 236898: 40'x 80' rectangular lot...2 boys mowing one decided that will stop at a uniform distance ..moving using the collapsing pattern....what uniform distance should one stop mowing
Click here to see answer by edjones(8007)

Question 236844: Please help me solve this problem:
Find k to make the trinomial a perfect square:
r square + 10r + k
Thank you, Carrie
Click here to see answer by scott8148(6628)

Question 236902: what is the effect of the dsicriminanat on the solutions of a quadratic equation. what is the advantge of using the quadratic formula versus other methods to solve quadratic equations?
Click here to see answer by thrasherlax74(11)

Question 237081: finding complex solution
x^2+2=0
Click here to see answer by solver91311(24713)

Question 237072: how do i find the complex, rational, or real zeros in the equation 1/3x^3+ 1/2x^2 -6x
Click here to see answer by solver91311(24713)

Question 237119: hello my teacher assigned my class a project, and we have to solve this equation for y:
(X^2+y^2)^2-8X(X^2-3Y^2)+18(X^2+Y^2)=27
thank you for your help.
Click here to see answer by Alan3354(69443)

Question 237296: write the quadratic f(x)=2x^2+8x-2 in standard form. I got f(x)=(2x^2+4)-4-2, do I go further?
Click here to see answer by edjones(8007)

Question 237294: x + 10 = 3(x - 1)2
Click here to see answer by edjones(8007)

Question 237389: Please help me!
Anne Pelletier won a bronze medal in the women's springboard competition at the 1996 Summer Olympics in Atlanta. Pelletier somersaults from a 3 m springboard. Her height, h metres, above the water t seconds after she leaves the board is given by . How long is it until Pelletier reaches the water? How high is she after 0.5 seconds?

Thank you!
Click here to see answer by ankor@dixie-net.com(22740)

Question 237411: how do you factor 4c^2+4c-3
Click here to see answer by stanbon(75887)

Question 237415: For what value of K will the roots of the Equation 2x^2-4x+K=0 be REAL AND EQUAL???
Click here to see answer by stanbon(75887)

Question 237433: 81t^2 = 49
Click here to see answer by jim_thompson5910(35256)

Question 237451: Can I get 81t^2 = 49 work with Square root property
Click here to see answer by solver91311(24713)

Question 237494: Quadratic Equation
Z^2-4z+3=0
I worked it this way but can get the right answer can you tell me what I am doing wrong?
Z^2 - 4z + 3 = 0
a=Z
b=-4
c=3
z = 4+- Ѵ4^2-4(z) (3) over 2(z)
z=4+4+- Ѵ4 over 2
answer in back of book 1, 3
Click here to see answer by scott8148(6628)

Question 237505: What is the difference between:
1/x-3 and x+3/x^+9
Click here to see answer by stanbon(75887)

Question 237521: X^2 + 3-2=0
Click here to see answer by checkley77(12844)

Question 237521: X^2 + 3-2=0
Click here to see answer by College Student(505)

Question 237504: What is the average of the 2 solutions for the general equation ax^+b+c=0
How can this be useful when checking answers?
Click here to see answer by Earlsdon(6294)

Question 237525: what is the line of a quadratic equation?
Click here to see answer by unlockmath(1688)

Question 237535: z ( Z-9) = -2
Click here to see answer by edjones(8007)

Question 237615: z(z-9)=-20
Click here to see answer by nyc_function(2741)

Question 237615: z(z-9)=-20
Click here to see answer by College Student(505)

Question 237493: What value of K will the roots of the equation 2x^2-3x+K=0 be imaginary?
Click here to see answer by Theo(13342)

Question 237680: 3x3x^2+7=0

3x^2+2x-7=0

x=-2+or-sqrt2^2-4(3)(-7)/2(3)
x=-2+or-sqrt4+84/6
x=-2+or-sqrt88/6
I am stuck at this point do I break the radicand 4*22?

Thank you,

Tina
Click here to see answer by Earlsdon(6294)

Question 237695: A)find the quadratic function that models data as a function of x, the number of weeks.
weeks- 0,1,2,3,4,5,6
#- 585,582,629,726,873,1070,1317
B) use the model to estimate the number at 8 weeks

Click here to see answer by Edwin McCravy(20054)

Question 237737: (t-5)^2=2(5-t)
Click here to see answer by jim_thompson5910(35256)

Question 237794: Solve using the qudratic equation.
w+4sqrt(w)-12=0
Click here to see answer by solver91311(24713)

Question 237794: Solve using the qudratic equation.
w+4sqrt(w)-12=0
Click here to see answer by stanbon(75887)

Question 237819: Solve qudratic equation.
(x^2-7)^2+3(x^2-7)+2=0
Click here to see answer by solver91311(24713)

Question 237914: how do you graph y>x^2
Click here to see answer by Alan3354(69443)

Question 238053: anna weighs 3kg more than her sister and their total weight is 105kg,what is the weigth of each girl
Click here to see answer by alicealc(293)

Question 238110: please show how to solve t squared minus seventeen equals 2t
Click here to see answer by Theo(13342)

Question 238380: b. The total area is 110 m2. Write an equation to find x

c. Solve the equation by completing the square.
Click here to see answer by rapaljer(4671)

Question 238424: Determine the values of p for which one root of the equation
x2 - 12x + p = 0 (x2 = x squared)
is 2 more than the other root.
Many thanks.
Walker
Click here to see answer by jsmallt9(3758)

Question 238524: X� = 18 -7x

Click here to see answer by nyc_function(2741)

Question 238378: Hi,
Can you please help me with this problem?
Find the dimensions of a rectangle whose perimeter is 46m and whose area is 126m.
Also
The length of a rectangle is 8 cm greater then its width. Find the dimensions if its area is 105 cm
We need to solve it using quadratics and possibly using factoring!
Click here to see answer by ankor@dixie-net.com(22740)

Question 238656: I need help to figure out the x. the problem is

Click here to see answer by jim_thompson5910(35256)

Question 238589: At a given time of day, the ratio of the height of an object to the length of its shadow is the same for the objects. If a 5ft post casts a shadow of 1.2ft. find the length of the shadow for a 17ft post.
Click here to see answer by rfer(16322)

Question 238747:
4xsquare -49=0
(2x-7)(2x-7)=0
2x-7=0 2x-7=0
2x=7 2x=7
Click here to see answer by Alan3354(69443)

Question 237945: 3(y2+3)=28y
Click here to see answer by College Student(505)

Question 238887: 9991 as a difference of two numbers each of which are perfect squares
Click here to see answer by kunwarmanojsingh(1)

Question 238897: factors of t^4-81
Click here to see answer by JimboP1977(311)

Question 238068: 2X^2+5X-7=0
Click here to see answer by College Student(505)

Question 238896: factors of t^4-81
Click here to see answer by unlockmath(1688)

Question 238969: 50x(squared)=200
Please show us how to solve for "X" by using factoring.
Thank You
Click here to see answer by Alan3354(69443)

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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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