Jess solved the quadratic equation x^2+2x=8

Question

but made a mistake. Her work is shown below. Identify the step(s) in which a mistake was made.

Step 1: x^2+2x−8=0

Step 2: (x−4)(x+2)=0

Step 3: x−4=0 or x+2=0

Step 4:x=−4 or x=−2

Answer 1

Step 4 is where the mistake was made. The correct solutions should be x=4 or x=-2, not x=-4 or x=-2.