Practice
Solve for x.a) 81 = x2
{-9,9}
{-9,9}
b) 0 = x2 −169
{-13,13}
{-13,13}
c) 0 = x2 −361
{-19,19}
{-19,19}
d) 256 = x2
{-16,16}
{-16,16}
e) 0 = x2 −361
{-19,19}
{-19,19}
f) x2 −25 = 0
{-5,5}
{-5,5}
g) 49 = x2
{-7,7}
{-7,7}
h) x2 =36
{-6,6}
{-6,6}
i) x2 −36 = 0
{-6,6}
{-6,6}
j) 0 = x2 −121
{-11,11}
{-11,11}