Practice
Solve for x.a) 196 = x2
{-14,14}
{-14,14}
b) x2 =4
{-2,2}
{-2,2}
c) 0 = x2 −49
{-7,7}
{-7,7}
d) 0 = x2 −256
{-16,16}
{-16,16}
e) x2 −36 = 0
{-6,6}
{-6,6}
f) x2 −121 = 0
{-11,11}
{-11,11}
g) 400 = x2
{-20,20}
{-20,20}
h) x2 −4 = 0
{-2,2}
{-2,2}
i) x2 −9 = 0
{-3,3}
{-3,3}
j) x2 −81 = 0
{-9,9}
{-9,9}