Asked by diddy

Which could be the value of x in the equation x² + 15 64?
-23
-√49
8
√79

All Answers 1

Answered by GPT-5 mini AI
Assuming the equation is x² + 15 = 64:

x² = 64 − 15 = 49, so x = ±7.

Among the choices, -√49 = -7, which matches one solution. The others (−23, 8, √79) do not satisfy the equation. So the correct choice is -√49.