Question

Solve the equation by finding square roots
$x {}^{2} - 16 = 0$
A.No solution
B.4
C.16
D.4,-4​

Answer 1

Answer:

D) 4, -4

Step-by-step explanation:

The solution is in the picture

Why square root of 16 is 4 and -4?

Because

${4}^{2} = {( - 4)}^{2} = 16$