Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 200964: solve using the quadratic formula
9x -2 = 3x^2
Click here to see answer by jim_thompson5910(35256)

Question 200962: solve for the roots of each equation using the factoring method
14x^2 +29x + 12=0
Click here to see answer by Alan3354(69443)

Question 200961: solve for roots of each equation using the factoring method
60x^2 +14x=9x^2 -20x
Click here to see answer by Alan3354(69443)

Question 200963: solve using the quadratic formula
2/3 x^2 - x = 5/2
Click here to see answer by Alan3354(69443)

Question 200980: -5�4=

Click here to see answer by rfer(16322)

Question 201038: Ben is making wooden toys for the next arts and crafts sale. Each toy costs Ben $1.80 to make. If he sells the toys for $3.00 each, how many will he have to sell to make a profit of exactly $36.00 ?
A. 12
B. 20
C. 30
D. 60
E. 108

Plaese help.
My answer C
Click here to see answer by josmiceli(19441)

Question 201168: Find the maximum or minimum value of f(x)= -3x^2 +4x-1
Click here to see answer by Earlsdon(6294)

Question 201168: Find the maximum or minimum value of f(x)= -3x^2 +4x-1
Click here to see answer by RAY100(1637)

Question 201201: Solve by the square-root property.
(x - 2)2 = 36

Click here to see answer by jim_thompson5910(35256)

Question 201192: Hello, I need to find a quadratic function in the form Y=ax^2+bx+c that passes through the points (1,359),(3,281),(4,194) and evaluate that function at x=5? Thanks for the help!
Click here to see answer by solver91311(24713)

Question 201231: x intercepts of f(x)=7x+x(x-5)
The first question was to solve 7x+x(x-5)=0 and I found x=(0,-2), the next question was to find the x intercepts of f(x)=7x+x(x-5), and I am getting confused! Help! Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 201306: Could someone help me solve for x: 2x/x+4-1/x-3=0
Click here to see answer by nerdybill(7384)

Question 201334: Please help. I'm not sure I have this done correctly.
3/-5-x - x/x-3=0
Click here to see answer by RAY100(1637)

Question 201334: Please help. I'm not sure I have this done correctly.
3/-5-x - x/x-3=0
Click here to see answer by MathTherapy(10549)

Question 201342: Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?
A. $280.90
B. $287
C. $292.50
D. $306
E. $333.89
Can you show me how do this step by step please,I need to know how to this on my own..Please and thank you
Click here to see answer by nerdybill(7384)

Question 201344: Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?
A. $280.90
B. $287
C. $292.50
D. $306
E. $333.89
Can you show me how do this step by step please,I need to know how to this on my own..Please and thank you
Click here to see answer by rfer(16322)

Question 201343: if leah is 6 years older than Sue and JOhn is 5 years older then leah, and the total of their ages is 41. How old is Sue?
Can someone clarify this for me?Thank you
Click here to see answer by rfer(16322)

Question 201438: I am having trouble trying to solve this problem. Can you please help
x^2-2x -13
I believe that sign represents power to the secong degree.
Click here to see answer by Alan3354(69443)

Question 201512: An apartment owner wants to increase the monthly rent from the $250 in x increases of $10.
A. What is the new price after the x increase of $10?
B. If the number of apartments rented is 70-2x and the revenue is the number of apartments rented times the rent, what is the revenue?
C.If the owner wants to receive $17,980 per month, how many $10 increases can the owner make?
D. What will be the monthly rent?
Click here to see answer by josmiceli(19441)

Question 201572: solve equation by completing the square
n^2+16n-97=-3
Click here to see answer by jim_thompson5910(35256)

Question 201614: How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? Explain. Provide your classmate�s with one or two solutions with which they must create a quadratic equation
Click here to see answer by jsmallt9(3758)

Question 201620: Solve equation with quadratic formula
3n^2-15=-4n
Click here to see answer by Earlsdon(6294)

Question 201620: Solve equation with quadratic formula
3n^2-15=-4n
Click here to see answer by jsmallt9(3758)

Question 201621: sketch the graph of the function
y=2x^2+4x+5
Click here to see answer by Earlsdon(6294)

Question 201591: x^2+8x+144=16/9
Click here to see answer by jim_thompson5910(35256)

Question 201632: x^2+x-42=0
Click here to see answer by jim_thompson5910(35256)

Question 201640: solve the equation with the quadratic formula:
9m^2=-2
Click here to see answer by jim_thompson5910(35256)

Question 201639: solve the equation with the quadratic formula:
8r^2=9
Click here to see answer by Alan3354(69443)

Question 201639: solve the equation with the quadratic formula:
8r^2=9
Click here to see answer by jim_thompson5910(35256)

Question 201636: Hi, Could you help me to find a way to this problem?!Tanks=)
One number is 6 less than a secound number.The product of the numbers is 48 more than the square of the smaller number.Find the two numbers.
I tryed to solve with this way but i couldnt finish it:

Click here to see answer by RAY100(1637)

Question 201666: FIND THE VALUE OF 'X' BY QUADRATIC FORMULA
1. 9x^2-9(a+b)x+2a^2+5ab+2ab^2=0
2.a^2b^2x-(4b^4-3a^4)x-12a^2b^2=0
I WILL BE THANKFUL
PRIYAL
Click here to see answer by jim_thompson5910(35256)

Question 201718: This is a word problem and I can't use the perfect square I have to use the quadratic equation
5x7 photo that I have to put on a piece of paper
the area of the mat should equal that of the picture. I have to determine the proper l and width.
5x7 = 35 sp"
(5 + 2x)(7+2x) = 35
answer: l = 10.33 w = 9.33
but it's wrong that is larger than the photo
Click here to see answer by Alan3354(69443)

Question 201725: f(x)+3x^2-x+4
find
f(2)
f(2x)
f(x+2)
Click here to see answer by solver91311(24713)

Question 201727: f(x)=3x^2-x+4
find
f(2)
f(2x)
f(x+2)
Click here to see answer by solver91311(24713)

Question 201692: sketch the graph of the function
y=2x^2-16x+35
Click here to see answer by Alan3354(69443)

Question 201740: Solve the equation x^2 + 8x - 2 = 0 using both the quadratic formula and completing the square method.
Click here to see answer by Alan3354(69443)

Question 201688: solve the equation by taking square root:
8x^2-3=-155
Click here to see answer by RAY100(1637)

Question 201690: solve the equation with the quadratic formula:
9m^2=-2
Click here to see answer by RAY100(1637)

Question 201687: solve by completing the square:
b^2-8b-38=10
Click here to see answer by solver91311(24713)

Question 201744: A retailer spen $48 to purchase a number of special mugs. Two of them were broken in the store, but by selling each of the remaining mugs for $3 above the original cost per mug, she made a total profit of $22. Rewrite the equation of (n-2)(3+(48/n))=48+22 in a quadratic equation.
Click here to see answer by ankor@dixie-net.com(22740)

Question 201805: Find the quadratic equation that has one solution of 5.
Click here to see answer by vleith(2983)

Question 201886: Please, I need help.
for the line 2x-5y=852
find the slope?
find the slope as a line to it
thanks sooooo much
Click here to see answer by PRMath(133)

Question 201885: Hi there. I need some help.
solve for x or y.
2x-3y=2
7x-7y=5
I dont understand the -2
Click here to see answer by PRMath(133)

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, 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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, 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