Question

Determine whether x=-2is a solution of the quadratic equation x square -2x+8=0 or not

Answer 1

-2x+8=0

One solution was found :

x = 4
Step by step solution :

Step 1 :

Pulling out like terms :

1.1 Pull out like factors :

-2x + 8 = -2 • (x - 4)

Equation at the end of step 1 :

Step 2 :

Equations which are never true :

2.1 Solve : -2 = 0

This equation has no solution.
A a non-zero constant never equals zero.

Answer 2

Putting x= - 2 doesn't satisfied the equation,,, so it is not the solution.