A student is attempting to evaluate the literal equation below. Which statement best applies to the sample mathematical work shown?

A.
The student's substitution in step 1 is invalid or incorrect.
B.
The simplification performed in step 2 is invalid or incorrect.
C.
Raising 4 to the second power in step 3 before multiplying it by 3 is an invalid or incorrect.
D.
The mathematical work is correct as written.

Question

A student is attempting to evaluate the literal equation below. Which statement best applies to the sample mathematical work shown?

A.
The student's substitution in step 1 is invalid or incorrect.
B.
The simplification performed in step 2 is invalid or incorrect.
C.
Raising 4 to the second power in step 3 before multiplying it by 3 is an invalid or incorrect.
D.
The mathematical work is correct as written.

anonymous · Answer

That would be B....it should be x = -4 instead of 4