I've been having trouble with this problem: x2 + 2x = 8 So far this is what I got: -2±√-28 ----------- 2 However...

I've been having trouble with this problem: x2 + 2x = 8 So far this is what I got: -2±√-28 ----------- 2 However...

Please explain your reasoning.

500=2.2v+v2/20

I am trying to find a equation that would graph a parabola given the vertex and both x intercepts. Can you please help? Thanks.

I know I have to use the quadratic formula, but not sure how to get started. x=x0+v0t+(1/2)at^2, solve for t

3x^2-10x-3=0

The square of a number (x^2), decreased by 6, is equal to 18 decreased by 5 times the number. The numbers are _______ and _________.

Could someone help me with this question step-by-step using the quadratic formula? 3x²-17x+10

Question1. 6x^2 – 36x + 42 = 0 Question2. 3x^2 – 48x + 153 = 0

How to get the formula s=1/2(αβ/α+β)t2

I have derived a formula and I wonder what formula is similar to this one in a mathematical point of view? F = (X2 - Y2)/ (X - Y )2 Is there any formula that looks like...

In a shot put even, Jenna tosses her last shot from a position of about 6 feet above the ground with an initial vertical and horizontal velocity of 20 ft./s the height of the shot is modeled by the...

x^2+50=0 and ...

what is the exact process of the Quadratic Formula?

A stone is thrown upward at a velocity of 32 ft./s from a mountain 240 feet high when will the stone hit the ground

suppose that the equation v=5.5x^2-440x+17500 represents the value of a car from 1970 to 2017. What year did the car have the least value? (x=0 in 1970)

The area of the field is 800 yd.² The length of the field is twice the width

The answer must be in decimal in hundreths

Tickets to a school dance cost $2, and the projected attendance is 575 persons. It is further projected that for every 10¢ increase in ticket price, the average attendance will decrease by 5...

A number is 30 less than its square.find the numbers