Question

Solve the equation.

x2 = 160

Answer 1

possible answers:

Answer 2

\(x^2 = 160\)

An equation of the form

\(X^2 = k\),

where X is an expression in x, and k is a number
can be solved by writing it as

\(X = -\sqrt{k}\) or \( X = \sqrt{k} \)

and solving each equation.