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