## Algebra 1: Common Core (15th Edition)

$w=18$
You are given $\sqrt {w-2}=4$. Solve for w: $\sqrt {w-2}=4$ $\sqrt {(w-2)^2} = {4}^{2}$ $w-2=16$ $w=18$ Check solution: $\sqrt {18-2}=4$ $\sqrt {16}=4$ $4=4$ The solution is $w=18$.