Question

Solve the equation. If necessary, round your answer to the nearest tenth.

x^2 = 196

A.
14

B.
–14, 14

C.
98

D.
–98, 98

Answer 1

B. -14, 14
You just need to square root both sides. When you square root 196, however, you can't be sure as to whether x is negative or not, because -14^2 AND 14^2 are both 196. That's why the right answer is B.