Practice
Solve for x.a) x2 −16 = 0
{-4,4}
{-4,4}
b) 0 = x2 −361
{-19,19}
{-19,19}
c) 225 = x2
{-15,15}
{-15,15}
d) 0 = x2 −16
{-4,4}
{-4,4}
e) x2 =144
{-12,12}
{-12,12}
f) x2 =25
{-5,5}
{-5,5}
g) 100 = x2
{-10,10}
{-10,10}
h) 0 = x2 −400
{-20,20}
{-20,20}
i) x2 =144
{-12,12}
{-12,12}
j) 0 = x2 −4
{-2,2}
{-2,2}
