Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 618560: f(x)=x^2-6x-3
vertex?
equation of line of symmetry?
max/min of f(x)?
is the value of, f(3)=-12 a min or max?
graph
Click here to see answer by John10(267)

Question 618596: Find the equation of the parabola that satisfies the given conditions, and draw the graph...
the parabola passes through three points:(-1,1)(0,4)(1,5)

work so far~ let y=ax^2=bx+c
Click here to see answer by John10(267)

Question 618674: Can U help me with this one? Find The SS Or the value of x and y ... x+y=3 & x-y=5... :) HELPP
Click here to see answer by vleith(2825)

Question 618724: 2x/5x^2-47x+18 - 9x/5x^2-44x-9

Click here to see answer by ewatrrr(10682)

Question 618820: I have to simplify the equation: I have tried simplifying it by using the square root property, since it does not have the middle term. The answer is {-5 sqrt (3), -3, 3,5 sqrt (3)}
Click here to see answer by Alan3354(31538)

Question 618833: A) Build a pattern using tiles for y=x^2-4x+3
B) Show how your pattern would look for x= -2,-1,0,1,2 (do I simply plug these number in the quadratic equation?!)
C) Find the y-intercept and the x- intercept (if any), the turning point (vertex) and the range.

Click here to see answer by solver91311(17077)

Question 618838: x^2-3x-6=0 (completing the square)

and -6x^2=3x+2(using the quadratic formula)

If you can show me how to answer these that would be great im having a little trouble with them.. thank you
Click here to see answer by solver91311(17077)

Question 618890: Use the Quadratic Formula to solve the equation.
-2x2 - 5x + 5 = 0
Click here to see answer by unlockmath(1614)

Question 618955: Find the discriminant then tell whether the equation has two,one, or no solutions
1.3x^2+4x-2=0
2.-5x^2+6x-6=0
3.6x^2-2x+4=0
Click here to see answer by Maths68(1474)

Question 618963: solve the equation t^3-4t^2-3t+5=0 ,can you please show me how to solve it using remainder theorem?
Click here to see answer by vleith(2825)

Question 619066: what is the vertex of x^2-4?!
I think I did it wrong because once I plugged in my input values(-2,-1,0,1,2) I got (-2,-16) (-1,-4) (0,0) (1,-4) (2,-16) so once I graphed it I got a downward parabola, and isnt it supposed to be upward since my x^2 is positive?! Please help me figure this out! Also, once for the the vertex points I did (x+2)=0 and (x-2)=0 to solve for x then I simply plugged it in to find y; however, once I did that my vertex points turned out to be (-2,16) (2,16)! This shouldnt be right since the vertex is the highest and lowest value! Please help... Thank you!
Click here to see answer by jim_thompson5910(28717)

Question 618552: will you please help me solve these solutions 4,-4 and 7,-7
Click here to see answer by richard1234(5390)

Question 619129: I have been stuck on this problem for days can someone please help me use completing the square to describe the graph f(x)=40-12x-x^2 support your answer graphically.
Click here to see answer by mathgranny(7)

Question 619182: Please help me solve 2x^2+6x+5=0
Click here to see answer by ewatrrr(10682)

Question 619187: Please help me graph 2x^2+6x+5=0
Click here to see answer by ewatrrr(10682)

Question 619119: The equation is y=(x+2)^2+k where k is a constant.
a)Find k when its tangent at x=1 passes through (0,0).
b)Find k when the quadratic is tangent to y=-x^2
Click here to see answer by ewatrrr(10682)

Question 619186: If one zero of polynomial 5z2+13z-p is reciprocal of the other then find p.
Click here to see answer by jsmallt9(3296)

Question 619208: Complete the squre for the parabola y=3x^2+5x+17
Click here to see answer by ewatrrr(10682)

Question 619280: During the first part of a trip, a canoeist travels 35 miles at a certain speed. The canoeist travels 14 miles on the second part or the trip at a speed 5 mph slower. The total time for the trip is 2 hours. What is the speed on each part of the trip?
(not understanding how to put this together!)
Click here to see answer by scott8148(6628)

Question 619404: x^2+14x-5=0

I don't get how to solve any of these type of equation completing the square.
Click here to see answer by stanbon(57984)

Question 619621: x^2+3x=28. I need help to solve this problem by completing the square
Click here to see answer by lenny460(842)

Question 619751: find a quadratic function that fits the set of data points (2,0) (4,3) (12,-5)
Click here to see answer by ewatrrr(10682)

Question 619902: Y=-2xsquared-2x-7 write in vertext form and tell me the vertex please
Click here to see answer by stanbon(57984)

Question 620114: you run a canoe rental business. You charge 12 dollars per canoe and average 36 per day. if you raise the price by fifty cents you lose 2 rentals a day.
12.00*36=432 whats the revenue formula for x price hikes?
Click here to see answer by josmiceli(9819)

Question 620173: admission prices for a football game were $6 for adults and $2 dollars for children the total value of tickets sold was $2528 and 454 tickets were sold. how many adults and children attended the game?
Click here to see answer by solver91311(17077)

Question 620095: The sides of an equilateral triangle are given as x+3y,3x+2y-2 and 4x+1/2y+1 respectively.Find the lengths of the sides
Click here to see answer by math-vortex(472)

Question 620288: precalc
Use synthetic division to divide.

x3 − 343/(x − 7)
Click here to see answer by lwsshak3(6770)

Question 620497: what is name of graph of quaderatic eqn
Click here to see answer by jim_thompson5910(28717)

Question 620517: The formula A=P(1+r)^2 gives the amount A in dollars that P will grow to in 2 years at interest rate r (where r is given as a decimal), using compound interest. What interest rate will cause $2000 to grow to $2163.20 in 2 years?
The interest rate is___%?
(type an integer or decimal, Round to the nearest tenth of a percent if needed)
Click here to see answer by ewatrrr(10682)

Question 620620: hi, my quadratic equation is (x+5)(x+8) =126.75
ive got these steps with help from a friend but as i need to show my working this wont be enough, i struggle with quadratics, what stages am i missing here?
X^2 + 13X – 86.75 =0
X=4.85782
X=4.85
thanks
Sam
Click here to see answer by MathTherapy(1484)

Question 620716: Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.)
x2 - 5x + 5 = 0
Click here to see answer by lynnlo(4169)

Question 620919: a pool measuring 18 meters by 28 meters. if the area of the pool and the path combined is 1200 square meters, what is the width?

Click here to see answer by math-vortex(472)

Question 621083: Solve the quadratic equation m2+ 2m - 24 = 0 by factoring.
Click here to see answer by lenny460(842)

Question 621264: Ed bought $2,000 in stock shares one week before the stock price dropped $10.00. If he had waited for the price setback, he could have bought 10 more shares for the same amount. How many shares did he buy?
40, 50, or 60?
Click here to see answer by josmiceli(9819)

Question 621308: when a ball dropped from height of her feet straight down, its height s at time t(in second)is given by formula s=h-16x^2. find the height of a ball dropped from a 500' perch after 5 second
Click here to see answer by josmiceli(9819)

Question 621340: Given a quadratic equation with rational coefficients with a root of 5-i: a)What is another root to the equation? b) What are the factors of the equation? c) What is the quadratic equation with the given root?
Click here to see answer by nerdybill(7011)

Question 621337: Given a quadratic equation with rational coefficients with a root of negative 2/3i: a) What is another root to the equation? b) What are the factors of the equation? c) What is the quadratic equation with the given root?
Click here to see answer by jsmallt9(3296)

Question 621351: Dmitri needs 7 liters of a 24% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 28% solution and the other an unlimited supply of of the 14% solution. How many liters of each solution should Dmitri use?
Click here to see answer by josmiceli(9819)

Question 621363: Change to equivalent fractions having their LCD. (b-2)/a, 4b/(b+1)
Click here to see answer by KMST(1936)

Question 621373: what is the equation required to create a simple wine glass in a graph and how can we find its volume?
Click here to see answer by KMST(1936)

Question 621485: complete the square x^2+12x=9
Click here to see answer by nerdybill(7011)

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