Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 6641: The roots of a quadratic equation are given. Graph the related quadratic function if it has the indicated maximum or minimum point.
roots: -2,+2
maximum point: (0,2)
I don't know what to do with this information. Please Help!! Thank You!!
Click here to see answer by ichudov(507)

Question 6637: I checked all of your solvers for quadratic functions, but did not understand what one of my questions was asking...the question was:
Solve the equation by completing the square. Leave irrational roots in simplest
radical form. x^2+4x-12=0
On your solvers, i typed in my equation, and it worked, but i didn't know what my question was asking for, so the answers didn't do me any good. Could you please help me with my question? Thank you!!
Click here to see answer by Earlsdon(6294)

Question 6639: Find three unit fractions that have a sum of 11/18
I'm not sure if this is what they are asking: 5/6 + 3/6 + 3/6=11/18
Would this be an answer? Thanks
Click here to see answer by Earlsdon(6294)

Question 6636: Is this true: A parabola is STRAIGHT with respect to its axis of symmetry.
I filled in the blank with STRAIGHT, but i'm not 100% sure that this is right.
Click here to see answer by rapaljer(4671)

Question 6656: Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each quadratic function. y=x^2-2x-8
Is (1,-9) x=1 the right answer?? Thanks
Click here to see answer by longjonsilver(2297)

Question 6674: how does the proof of quadratic formula work?
Click here to see answer by ichudov(507)

Question 6680: The perimeter of a rectangle is 34 feet, and the diagonal is 13 feet long. What are the length and width of the rectangle?
Click here to see answer by xcentaur(357)

Question 6687: use the quadratic formula to solve the following quadratic equations.
a. 3x^2+2x-8=0
b. 5x^2+7x=12

please help
Click here to see answer by ichudov(507)

Question 6686: place the following equations in the standard form of a quadratic equation (ax^2+bx+c=0)
a. 4/x^2+3/x-10=0
b. 6+4/x-1=5/x-3
c. 3.5x+4.6/x=1.2

please help
Click here to see answer by ichudov(507)

Question 6693: Can you tell me how to find the domain and range of this quadratic function?
y = -2x^2 - x + 4
Thanks!
Click here to see answer by ichudov(507)

Question 6707: I still can't get 3.5x+4.6/x=1.2 into standard form of quadratic equation.

im sooooo stuck, thanks 4 the help.
Click here to see answer by xcentaur(357)

Question 6736: Can somebody show me how to find the coordinates of the vertex of the graph of ?
Thank you!
Click here to see answer by Earlsdon(6294)

Question 6798: Iam not sure if Iam coming up with the right answer to this problem
Here it is...
Solve
3x^2 - 13x - 10 = 0
Iam coming up with x=-2/3 and x = 5
Thank You for any help you can provide.
Click here to see answer by glabow(165)

Question 6934: Please, I need help answering this equation. x^2-49y^2-14x+49
Click here to see answer by longjonsilver(2297)

Question 6045: a2 = 16
Click here to see answer by longjonsilver(2297)

Question 7023: How do you graph y=-2x?
Click here to see answer by glabow(165)

Question 7059: Please help!!! My instructor is asking what the basic principal is to simplify a polynomial? What is the relevance of order. We must turn in 200-300 words explaining
I know a polynomial is a single term or a finite sum of terms, powers must be positive. There are different types monomial, binomial, and trinomial. Iknow the polynomial has no specific value unless the variables are replaced by numbers. What is the basic principal? How do I describle the relevance of order? Please provide an example....Please help, it is due today.
Click here to see answer by longjonsilver(2297)

Question 7087: Please help me. I need to know how to compute the intercepts of a quadratic function, and In case of a quadratic function, why are there two x-intercepts and one y-intercept?
Click here to see answer by Earlsdon(6294)

Question 7077: identify the root to the nearest tenth.
y=2x^4+x^2-3
Click here to see answer by ichudov(507)

Question 7077: identify the root to the nearest tenth.
y=2x^4+x^2-3
Click here to see answer by khwang(438)

Question 7117: Use the discriminant to determine how many real-number roots the equation has. Do not solve the equation.
x^2-3x+5=0
That's what the worksheet says but I have no idea what a discriminant is or how to use it to determine how many real-number roots the equation has. What are real-number roots? Thank you to the tutors who help me with this.
Click here to see answer by Earlsdon(6294)

Question 6979: find the possible value or values of N in the quadratic equation please!
2n2 - 7n + 6 = 0
Click here to see answer by glabow(165)

Question 6976: which of the following is one of the two binomial factors of 6s2+40s-64?
(a). 6s-12 (C).3s-4
(b). 2s-16 (D). s+10
Click here to see answer by Earlsdon(6294)

Question 6975: which of the following are factors of t2-81?
(A). (t2-9)(t2-9) (C). (t-3)(t+3)2
(B). (t-3)2(t-3)2 (D). (t-3)(t+3)(t2+9)
Click here to see answer by Earlsdon(6294)

Question 7168: how do i "rewrite this function in the form by completing the square. find the vertex of the graph." the function is . so far i have which means . but the answer key i have says that the answer is and i don't know how to get the four or how to find the vertex after that. thank you!
Click here to see answer by sabanasir(22)

Question 7210: what is the discriminant in the quadratic equation x2 + 11x + 121 = x + 96
Click here to see answer by prince_abubu(198)

Question 7208: the width of a rectangle is 3 inches less than its length. the area of the rectangle is 340 square inches. what are the length and width of the rectangle?
thank you!!!!
Click here to see answer by prince_abubu(198)

Question 7209: use the discriminant to determine how many real number solutions the quadratic equation -4j2 + 3j - 28 = 0 has. please and thank you!!!
Click here to see answer by prince_abubu(198)

Question 7145: If the length of a wall is 48"in and the lenght of a picture is 26"in. What is the center of the two
Click here to see answer by mathwhiz(13)

Question 7224: Please help me solve this problem.
Solve the inequality. State and graph the solution set.
x3 < x
Can you explain the graph in english language, because I do not have graphing software.
Click here to see answer by longjonsilver(2297)

Question 7227: How do you find the mean and the variance of a quadratic equation?

Click here to see answer by longjonsilver(2297)

Question 7207: the hypotenuse of a right triangle is 26 feet long. one leg of the triangle is 14 feet longer than the other leg. find the lengths of the legs of the triangle. please, and thank you!!
Click here to see answer by longjonsilver(2297)

Question 7211: The perimeter of a rectangle is 52 inches. if the length of the rectangle is 2 inches more than its width, what are the dimensions of the rectangle.
Click here to see answer by erbirdsong(1)

Question 7302: solve: x/2+ x/5+ x/3=31
Click here to see answer by bonster(299)

Question 7335: Hi, Need some help on this word problem .. thank you
Solve the problem by using a proportion (fraction):
Leon drove 270 miles to the lodge in the same time as Pat drove 330 miles to the lodge. If Pat drove ten miles per hour faster than Leon, then how fast did each of them drive?

Click here to see answer by Earlsdon(6294)

Question 7426: 5x^2 + bx + 1 = 0
I am supposed to find all values of b that give one or more real number solutions. Please help me. I could'nt come up with anything.
Click here to see answer by prince_abubu(198)

Question 7474: How to solve this quadratic equation by completing the square

x^2 + 6X - 7 = 0
Click here to see answer by longjonsilver(2297)

Question 7481: please help me...
-282 - (+ 1,017)=
thank you!
Click here to see answer by bonster(299)

Question 7479: inequality problem: please help..
9h + 2< - 79
Click here to see answer by prabhjyot(165)

Question 7482: equation problem: please help...
y + 5 = 0
9
(y over 9 + 5= 0)
Click here to see answer by prabhjyot(165)

Question 7476: Inequality problem: Please help...
3p - 6> 21.
Click here to see answer by prabhjyot(165)

Question 7495: Determine the vertex of y=x^2-8x+22.
Click here to see answer by ichudov(507)

Question 7496: An object is projected upward from the top of a tower. Its distance
in feet above the ground after t seconds is given by s(t)=-16t^2+64t+80. How many seconds will it take to reach ground
level?
Click here to see answer by ichudov(507)

Question 7500: Please help me with this problem
Simplify this expression: 13 + (-12) - (-5) =
Thank You
Click here to see answer by arunpaul(104)

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, 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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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