Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 803198: a line y=c-3x is the tangent to a circle: x^2+y^2-4x-2y-5=0.
What are the values of c?
Click here to see answer by oscargut(2103)

Question 802625: (3xy2)3 (2xy2 5y3)2
Click here to see answer by tommyt3rd(5050)

Question 803295: Solve by factoring: 2x^2+126=32x
Click here to see answer by Alan3354(69443)

Question 803315: Find the equation (in terms of x) of the line through the points (-4,3) and (3,1)

Click here to see answer by stanbon(75887)

Question 803233: Here is my question :
Write the quadratic function in form f(x) =a(x-h)^2 +k
Then, give the vertex.
F(x)=-2x^2 +12x -17
Click here to see answer by KMST(5328)

Question 803351: Identify the curve and find the center, directix, and focus. Then sketch the curve.

Thank you!
Click here to see answer by josgarithmetic(39613)

Question 803377: find the two solutions for x(x+5)
Click here to see answer by mananth(16946)

Question 803378: find the solution of x(x-9)=0
(do i need to expand the brackets?)
Click here to see answer by mananth(16946)

Question 803379: 5a(2a-3)=0

Click here to see answer by mananth(16946)

Question 803456: How do I solve this n�+4n=0
Click here to see answer by oscargut(2103)

Question 803467: Rearrange the following equation to ﬁnd x in terms of a and b, in
simplest form (assume that a '= 4b):
a(a − x) + 4b(x − 4b) = 0.
This is my solution am i on the right track:
a^2-ax+4bx-16b^2=0
a^2-ax-0=4bx-16b^2
a^2-ax=4bx-16b^2
Now do i set each one to equal zero? on the algebra calculator i can see that the answer is x=4b+a but i have no idea how to get this answer. Thanks
Click here to see answer by oscargut(2103)

Question 803576: Solve for k
3x^2+kx+12=0
Click here to see answer by Alan3354(69443)

Question 803543: the square of a number is 6 less than 5 times the number. what is the number?
Click here to see answer by ankor@dixie-net.com(22740)

Question 99: The base of a triangle is five feet longer than the height. The area of the triangle is 75 square feet. Find the height and base of the triangle.
Click here to see answer by bala(1)

Question 804026: 4(c+3)=t solve for c
Click here to see answer by stanbon(75887)

Question 804104: solve the following equation by first factoring the expression.
x(squared) +5x-6
Click here to see answer by erica65404(394)

Question 804222: a ladder the length 2x+1 feet is positioned agianist a wall such that the bottom is x-1 feet away from the wall. the distance between the floor and the top of the ladder is 2x feet
Click here to see answer by solver91311(24713)

Question 804357: X^2+5x+6=0

Click here to see answer by solver91311(24713)

Question 804369: X^2+2x-15=0
Click here to see answer by solver91311(24713)

Question 804509: Write f(x)=x^2 -12x+3 in the form f(x)=a(x-h)^2+k

Click here to see answer by erica65404(394)

Question 804534: How to find x and y intercepts of quadratic function:
f(x)= -2(x+3)^2+4
Click here to see answer by erica65404(394)

Question 804559: solve the following equation by completing the square
x(squared) +2x=3

Click here to see answer by josgarithmetic(39613)

Question 804563: solve the following quadriatic equation by completing the square
x(squared) -2x-5=0
Click here to see answer by mananth(16946)

Question 804688: I need help with this problem?
Use the Quadratic Formula to solve the equation.
x^2-2x-1=0
Click here to see answer by solver91311(24713)

Question 804694: can someone help me with this equation please?
Give the coordinates of the x-intercept(s) (if they exist)for the graph of the equation. Give the answer in simplest form.
y=2x^2-3x-2
Click here to see answer by richwmiller(17219)

Question 804696: Can someone help graph this equation?
Graph the equation. Include the vertex on your graph.
y=k^2+4k+3
Click here to see answer by erica65404(394)

Question 804691: can someone help me with this problem please?
Give the coordinates of the vertex for the graph of the equation.
y=2x^2+4x
Click here to see answer by erica65404(394)

Question 804781: find two consecutive odd integers whose product is 63.
Click here to see answer by erica65404(394)

Question 804792: An airline transports about 800 people between Chicago and New York. A round-trip ticket is $300. It is estimated that with each $5 increase in ticket prices, 10 fewer passengers will fly the airline. What ticket price would maximize the income for the airline.
Click here to see answer by stanbon(75887)

Question 804862: Determine the shortest distance from the point D(5,4) to the line represented by 3x+5y-4=0
Click here to see answer by solver91311(24713)

Question 804872: John wants to enclose a rectangular field with 420 feet of fencing, which will be electrified. What should the dimensions be to provide a maximum amount of area in the field?
Click here to see answer by solver91311(24713)

Question 804560: solve the following equation by completing the square
x(squared) +6x+4=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 804561: solve the following quadriatic equation by completing the square
(x-2) (squared) =3
Click here to see answer by ankor@dixie-net.com(22740)

Question 805325: separate 18 into two parts such that twice the sum of their squares is 5 times their product.
the answers are given by:12and 6.
Click here to see answer by mananth(16946)

Question 805355: How would I solve:
Find the values for p for which the equation;
(p+3)x^2-12x+2p=0
has equal roots.
Thanks.
Click here to see answer by mananth(16946)

Question 805420: which direction does the parabola for the quadratic equation y = -5x2 �16
x + 21 open?
Click here to see answer by rfer(16322)

Question 805544: solve by factorization method

please give step by step solution.
Click here to see answer by richwmiller(17219)

Question 805549: how to factor with factor formula :
6x^2-x-2=0
please give step by step solution.
Click here to see answer by Alan3354(69443)

Question 805594: Jackie mows a strip of uniform width around her 25 m by 15 m rectangular lawn and leaves a patch of lawn that is 60% of the original area. What is the width of the strip?
Click here to see answer by ankor@dixie-net.com(22740)

Question 805743: Please help me solve this equation 5n^2-10n+7=0
Click here to see answer by stanbon(75887)

Question 805020: 17(p-5)=306

Click here to see answer by tommyt3rd(5050)

Question 805884: dx\dt=1\2com^s-1
y=4
x-y+2=0
a(1,1),b(0,4)
m ponit on straght
Click here to see answer by Alan3354(69443)

Question 806019: one solution of 20x^2+bx-9=0 is -6/5. Find b and the other solution.
What is the value of b in the equation?
What is the value of x in the equation?
Click here to see answer by richwmiller(17219)

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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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, 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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, 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