Question

If x^2=a^2 , then {x} is (always/never/sometimes) equal to {a}

Explain your reasoning.

Answer 1

always

Explanation:

for the 2 sides to be equal then x must always be equal to a

given

x² = a² ( take square root of both sides )

`√(x^2)` =
`√(a^2)` , that is

x = a