Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 454480: I really appreciate the help i'm getting from this website! Question: A rectangle has perimeter P. Find the maximum possible area of the rectangle. Thank you so so so so so so much for your time and effort!
Click here to see answer by rfer(12644)

Question 454569: I am very confused on this whole process, could you explain?
Click here to see answer by solver91311(16868)

Question 454626: what is the answer to this equation while rounding to the nearest hundreth? x^2+3x+2=0

Click here to see answer by ichudov(499)

Question 454629: what is the answer to this equation while rounding to the nearest hundreth? x^2+5x=6
Click here to see answer by ichudov(499)

Question 454832: What is the answer to x^2+6*x=16
I got to the point where I moved the "16" to the left and I make the whole equation zero and then I have no clue what to do next. I know that the answer is (2,-8) but I want to know how to get the answer.

Thanks for your help.
Click here to see answer by richwmiller(9132)

Question 455107: How do I find the vertex and line of symmetry of f(x)=-3(x+2)^2?
Click here to see answer by rfer(12644)

Question 455104: How do I find the vertex and line of symmetry with this equation? f(x)=4x^2
Click here to see answer by rfer(12644)

Question 455108: How do I find the solutions and x-intercepts of 3x^2-5x-7=0?
Click here to see answer by nerdybill(6948)

Question 455094: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function and graph the function.
f(x)=12x^2-12x+4
Click here to see answer by nerdybill(6948)

Question 455105: How do I find the exact and approximate solutions of this equation? x^2+3x-5=0
Click here to see answer by nerdybill(6948)

Question 453352: The total hang time is given by T(h)=sqrt h/2 where h is the maximum height . If a person jumps 2 feet off the ground how many seconds is the person in the air.
I'd be thankful
Click here to see answer by nmo9772(2)

Question 455307: Solve the equation. Describe the strategy you used to get your solution and tell why you chose that strategy. x^2 - 25 = 0
Click here to see answer by algebrahouse.com(1079)

Question 455367: Write the quadratic equation whose roots are -2 and 5, and the leading coefficient is 2. (Use the letter x to reepresent the variable. Thank you!
Click here to see answer by oberobic(2304)

Question 455273: If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t.   How many seconds does it take for the ball to reach its maximum height, and what is this height?
Click here to see answer by Alan3354(30924)

Question 455605: what is the answer to 6xsquared-24=0
Click here to see answer by rfer(12644)

Question 455619: i need help with these two quadratic equations, please(:
3(x-4)squared=18
and the other one..
4(x+9)squared=24
if anyone doesnt mind helping me out it would be so awesome!!
Thanks!
Click here to see answer by richwmiller(9132)

Question 455658: identify the graph for y=x^(2)-6x+10
Click here to see answer by robertb(4012)

Question 455805: I need to write a quadratic equation for the solution:
b^2-4ac>0
Please help!
Thanks Gina
Click here to see answer by Alan3354(30924)

Question 455795: write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form: ax^2+bx+c=0
-√6,7√6
please help,
Thanks
Gina
Click here to see answer by Alan3354(30924)

Question 455815: what is the quadratic equation for 4x+20=0
Click here to see answer by Alan3354(30924)

Question 455840: solve this quadratic equation 6x2-7x-3=0
Click here to see answer by nerdybill(6948)

Question 455846: What are the solutions of the quadratic equation below?

3x^2 - x = 11
Click here to see answer by rfer(12644)

Question 455850: I am stuck on this portion of the equation:
12(x-4)-(x+2)=(x+2)(x-4)
I know that you have to take everything on the right side and put it to the left. I have tried different ways and I am not getting the answer.
The answer is x^2-13x+42
If you can show me each step to come to that answer so I can use it for future equations to go off of. Thank You
Click here to see answer by Alan3354(30924)

Question 455887: I need help with this problem
The first part of a trip a canoeist travels 59 miles. the canoeist travels 17 miles on the second part of the trip at a speed 5mph slower. The total time for the trip is 4hrs. What was the speed on each part of the trip?
Help!
Thanks
Gina
Click here to see answer by richwmiller(9132)

Question 455955: using the graph determine the roots of the equation x^2-2x-3=0

Click here to see answer by rfer(12644)

Question 456184: Hi everyone, I have two problems to solve:
x^2+3x-4=0
x^2+2x-8=0
Thank you,
Gina
Click here to see answer by nerdybill(6948)

Question 456276: x^2+7x-44=0 I need to use the quadratic formula to solve the equation.
Click here to see answer by Alan3354(30924)

Question 456298: 4n^2=-6n-1 use quadratic formula.

Click here to see answer by rfer(12644)

Question 456027: please help with this math problem: write the quadratic equation that has these complex solutions:(3+-isqrt(13))/2
Click here to see answer by ankor@dixie-net.com(15622)

Question 456391: what is the answer to this problem: 4x^2 – 2x – 5 = 0
Click here to see answer by richwmiller(9132)

Question 456465: How so you solve?
2(x-1)^2=17

And
-X^2+13=3
Click here to see answer by Alan3354(30924)

Question 456485: The perimeter of a rectangle is 46 yd , and the area of the rectangle is 90 yd squared 2 . Find the dimensions of the rectangle.

Click here to see answer by tquon(6)

Question 456494: whats x2+16x=-48
Click here to see answer by Alan3354(30924)

Question 456494: whats x2+16x=-48
Click here to see answer by tquon(6)

Question 456531: The dimensions of a rectangular flower garden were 8 m by 15 m . Each dimension was increased by the same amount. The garden then had an area of 198 m2. Find the dimensions of the new garden.
Click here to see answer by tquon(6)

Question 456575: I have been working on a problem and I cannot figure out how to get an approximated answer to three decimals. Can you show me how to get this.
This is what I have so far.
In the right trianle, find the length of the side not given. Give an exact answer and an approximation to 3 decimal places.
a = 13 b = 13 a+b=c 13^2+13^2=c^2 169+169=c^2
169+169=338 338=c^2
This is what I have so far. Take the square root of both sides c=338. The exact value of c is the sqrt of 338. The value approximated to three decimals is ?
Am I doing this problem correctly? If I am I do not know how to get the value appoximated to three decimals. Can you help me please?
Click here to see answer by edjones(7569)

Question 456546: solve 2(w+4)+2w

Click here to see answer by edjones(7569)

Question 456617: Good morning,
I need to solve using the quadratic formula,
3x^2-4x-15=0
Thanks
Gina
Click here to see answer by mananth(12269)

Question 456597: What is the Basic tricks to answer a Quadratic Formula?
Click here to see answer by rfer(12644)

Question 456597: What is the Basic tricks to answer a Quadratic Formula?
Click here to see answer by Alan3354(30924)

Question 456616: Please please help
Find the quadraic equation that fits the following set of data points
(5,9),(4,-45),(-1,-15)
Click here to see answer by ankor@dixie-net.com(15622)

Question 456739: Solve the equation by completing the square.
a. Write irrational numbers in simplest radical form.
b. Describe each step as you go.
X^2 + 4x – 8 = 0
Click here to see answer by stanbon(57203)

Question 456742: 225c^2+810cp+729p^2 factor
Click here to see answer by solver91311(16868)

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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