Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 283306: 2y^(2/3)+17y^(1/3)+30=0

I don't understand how to do this problem!
Click here to see answer by richwmiller(9135)

Question 283328: 4x(x-9)-5x(x-8)=-5
Click here to see answer by mananth(12270)

Question 283328: 4x(x-9)-5x(x-8)=-5
Click here to see answer by Deina(147)

Question 283231: Factor out the largest common factor. Show all work.
36x^9y^8 + 28x^4y^5 - 32x^7y^2
Please help me to many powers are confusing me.
Click here to see answer by mananth(12270)

Question 283230: Factor completely.
-3x^3 - 6x^2 + 189x
Click here to see answer by mananth(12270)

Question 283272: Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution.
If an object is thrown upward with an initial velocity of 96 ft/sec, its height after t sec is given by h=96t - 16t^2. Find the number of seconds before the object hits the ground.
Click here to see answer by Theo(3458)

Question 283380: Factor completely.
64x^2 - 48xy + 9y^2
Click here to see answer by richwmiller(9135)

Question 283377: Factor completely.
6y^2 + 27y - 15
Click here to see answer by Deina(147)

Question 283378: Factor completely.
25y^4 - 36
Click here to see answer by nerdybill(6948)

Question 283445: I have math homework and the question says : work out which of these functions are quadratic and whether it is U shaped or the n shaped. eg: y= x squared + 7u ... how do i work this out??
Click here to see answer by richwmiller(9135)

Question 283479: Solve the equation by graphing x to the second - 8x + 7 = 0 (answer has to be a curved line)
Click here to see answer by oberobic(2304)

Question 283487: Factor
Click here to see answer by jim_thompson5910(28476)

Question 283487: Factor
Click here to see answer by richwmiller(9135)

Question 283538: how do i know whether to use the quadratic formula or graph to solve my quadratic equation?
Click here to see answer by richwmiller(9135)

Question 283583: Marvin wants to purchase a rectangular rug. it has an area of 80 square ft. he cannot remember the length and width, but he remembers that the length was 8 more than some number and the width was 8 more than the same number.
What is the quadratic eqation that can be made from the above information?
Click here to see answer by oberobic(2304)

Question 283605: How do you solve y= 3x(squared) + 6x
Click here to see answer by user_dude2008(1861)

Question 283695: ok its a max height question and im unsure of how to go about solving it.
the path of a basketball shot can be modelled by the equation h= -0.125d^2 +2.5 where h is the height of the ball and d is the horizontal distance.
find the max height
find the horizontal distance of the ball when it reaches max height
and how far from the floor is the ball when the player releases it ?
thats all thanks
Click here to see answer by stanbon(57222)

Question 283912: how do you solve g(x)= x^2+x+12 using the quadratic formula?
Click here to see answer by jim_thompson5910(28476)

Question 283865: A car travels 100km. If the car went 18km/h faster, it could have traveled 150 km in the same amount of time. What was the original speed of the car?
Click here to see answer by richwmiller(9135)

Question 284006: please show me step by step how to solve 25x^2-16=0
Click here to see answer by checkley77(12569)

Question 284042: y=5x^2
Click here to see answer by richwmiller(9135)

Question 284167: trinomial:
x^2 + 7x + 6

Click here to see answer by stanbon(57222)

Question 284169: A company's profit, in thousands of dollars, on sales of computers is modelled by the function P(x)= -2(x-3)^2+ 50, where x is in thousands of dollars, on sales of computers sold. The company's profit, in thousands of dollars, on sales of stereo systems is modelled by the function P(x) = -(x-2)(x-7), where x is in thousands of stereo sytems sold. Calculate the maximum profit the business can earn.
Click here to see answer by stanbon(57222)

Question 284117: how do I graph f(x)=-3x2 + 8x
Click here to see answer by nyc_function(2733)

Question 284358: a jet flew from tokyo to bangkok, a distance of 4800km. on return trip, the speed was decreased by 200 km/h. if the difference in times f the flights was 2 hours, what was the jet's speed from bangkok to tokyo?
Click here to see answer by richwmiller(9135)

Question 284371: determine the nature of the solutions to the equation x2+5x-2=0
Click here to see answer by Alan3354(30959)

Question 284186: Discuss two examples where you use a quadratic function and another where you use a radical equation.
Click here to see answer by alex224(8)

Question 284087: I need help with this one homework question.
A ball is thrown into the air with an initial upward velocity of 60ft/sec. Its height (h) in feet after 1 sec is given by the function h=-16t2(2= squared cant make a little 2)+60t +6
a: after how many seconds will the ball hit the ground?
b: what will the height be at if t= 3 seconds
i think for part be the answer is 42 ive plugged in 3 for t and got 42 i have no idea how to get part A
Click here to see answer by Alan3354(30959)

Question 284420: I need help in understanding "completing the square for a quadratic function" My problem is the following
Rewrite each function in the from f(x)=a(x-h)2 + k
(a) f(x)=x2 + 6x (b) f(x)=2x2 - 20x + 3
Click here to see answer by solver91311(16868)

Question 284409: f(x) = -x^2 - 6x - 13 in vertex form is -(x + 3)^2 - 4
True or false?
Click here to see answer by Fombitz(13828)

Question 284479: What is the formula for a exponential equation?
Click here to see answer by nyc_function(2733)

Question 284646: find the side of a square with an area of 256m2 using quadratic equation then solve
Click here to see answer by richwmiller(9135)

Question 284587: A picture frame is 18 cm by 14cm. There are 192 cm2 of picture showing. Find the width of the frame.
Click here to see answer by mananth(12270)

Question 284791: find the vetex, line of symmetry and min/max value for:
f(x)= -3 (x-7)^2 + 4
Click here to see answer by stanbon(57222)

Question 284708: The height of a ball after being dropped from a point 100 ft above the ground is given by: h(t)=-16t^2+100.
When will the ball be 60ft above the ground?
What is the max. height reached?
When will the ball reach the ground?
Click here to see answer by toidayma(44)

Question 284790: Suppose that r1 and r2 are the roots of the quadratic equation ax2 + bx + c = 0.
Note that:
(x – r1)(x – r2)= x2 – (r1 + r2)x + r1r2.
Explain how to use this result to check the solutions of a quadratic equation of the form x2 + bx + c. Then use the result to check that –3 + 2i and –3 – 2i are solutions of the equation x2 + 6x + 13 =0.

Click here to see answer by richwmiller(9135)

Question 284863: 3x^2-6x-2=0 can you please help me answer this problem, i tried completing the square and the quadratic formula but i cant get the answer
Thanks David
Click here to see answer by Fombitz(13828)

Question 284953: x^2-25=0
Click here to see answer by checkley77(12569)

Question 285044: 1.express y=(x-2)^2+4 in standard form.

Click here to see answer by richwmiller(9135)

Question 285064: a special olympics event has 2 more boys than girls competing. the total number of paticipants is 1000. how many girls competed and how many girls competed?
Click here to see answer by Deina(147)

Question 285245: solve using quadratic formula
r^2+3r-3=0
Click here to see answer by toidayma(44)

Question 285354: z^2+18=-11z
Click here to see answer by user_dude2008(1861)

Question 285407: 1. Can some one solve this -x^2 + 4x + 4

Click here to see answer by richwmiller(9135)

Question 285392: how do you find zeroes in a quadratic function?

Click here to see answer by richwmiller(9135)

Question 285433: Hello. My name is Mia. I don't know how to put the following question into a rational expression. Dr. Taylor can see 10 patients in 5 hours. At this rate, how long would it tke him to see 40 patients?

Click here to see answer by richwmiller(9135)

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