Practice
Solve for x.a) 81x2 =169
{-13/9,13/9}
{-13/9,13/9}
b) 64x2 −9 = 0
{-3/8,3/8}
{-3/8,3/8}
c) 49x2 =169
{-13/7,13/7}
{-13/7,13/7}
d) 49x2 −144 = 0
{-12/7,12/7}
{-12/7,12/7}
e) 4x2 −225 = 0
{-15/2,15/2}
{-15/2,15/2}
f) 16x2 =225
{-15/4,15/4}
{-15/4,15/4}
g) 25x2 =64
{-8/5,8/5}
{-8/5,8/5}
h) 64x2 −25 = 0
{-5/8,5/8}
{-5/8,5/8}
i) 25 = 81x2
{-5/9,5/9}
{-5/9,5/9}
j) 9x2 =100
{-10/3,10/3}
{-10/3,10/3}