On a recent homework​ assignment, Lilah needed to solve this equation completely. She incorrectly wrote ​"vequals4​." Solve the equation. What error did Lilah ​make?

Question

v^2 = 16

Answer 1

Taking the square root of both sides, we get:

v = ±4

Therefore, the correct answer is v = ±4.

Lilah's error was not including both the positive and negative solutions when taking the square root of both sides.