Jess solved the quadratic equation x2+2x=8
but made a mistake. Her work is shown below. Identify the step(s) in which a mistake was made.
Step 1: x2+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
(1 point)
Responses
Step 2 Only
Step 2 Only
Step 3 Only
Step 3 Only
Step 4 Only
Step 4 Only
Steps 2 and 3
Steps 2 and 3
Steps 2 and 4
1 answer
Steps 2 and 4