SOLUTION: Solve by any method x2 – 2x = 8

Algebra.Com
Question 280188: Solve by any method
x2 – 2x = 8

Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=36 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 4, -2. Here's your graph:
RELATED QUESTIONS

Solve by any method x2 – 2x = 8 (answered by JBarnum)
Solve by any method x2 + 6x –1 = 0 (answered by jim_thompson5910,richwmiller)
solve x by using any method... (answered by Alan3354)
Solve by factoring: x2 + 2x = 8 (answered by edjones)
Solve by graphing. x2 +2x - 8 =... (answered by ewatrrr)
x=7/2y+4 2x-7y=8 solve by any... (answered by jim_thompson5910)
Solve each system by any method. 2/3x - 1/4y = -8 1/2x - 3/8y =... (answered by richwmiller)
Solve 2x^2-2x-1=0 by any... (answered by solver91311,checkley77)
solve 2x^2-2x-1=0 by any... (answered by jim_thompson5910)