Practice
Solve for x.a) x2 =256
{-16,16}
{-16,16}
b) x2 −100 = 0
{-10,10}
{-10,10}
c) 81 = x2
{-9,9}
{-9,9}
d) x2 =196
{-14,14}
{-14,14}
e) x2 =4
{-2,2}
{-2,2}
f) 196 = x2
{-14,14}
{-14,14}
g) 0 = x2 −4
{-2,2}
{-2,2}
h) x2 −4 = 0
{-2,2}
{-2,2}
i) x2 =400
{-20,20}
{-20,20}
j) x2 −64 = 0
{-8,8}
{-8,8}