Question

If x2=7 what is a value of x?

A.√7
B.3.5
C.√49
D.14

Answer 1

x = sqrt(7) or x = -sqrt(7) thus of the choices you have A:

Explanation:

Solve for x:

x^2 = 7

Take the square root of both sides:

Answer: x = sqrt(7) or x = -sqrt(7)