Practice
Solve for x.a) 169 = 81x2
{-13/9,13/9}
{-13/9,13/9}
b) 81x2 −196 = 0
{-14/9,14/9}
{-14/9,14/9}
c) 0 = 49x2 −144
{-12/7,12/7}
{-12/7,12/7}
d) 49x2 −121 = 0
{-11/7,11/7}
{-11/7,11/7}
e) 0 = 49x2 −9
{-3/7,3/7}
{-3/7,3/7}
f) 16x2 =169
{-13/4,13/4}
{-13/4,13/4}
g) 9 = 4x2
{-3/2,3/2}
{-3/2,3/2}
h) 49x2 =64
{-8/7,8/7}
{-8/7,8/7}
i) 64x2 =169
{-13/8,13/8}
{-13/8,13/8}
j) 0 = 49x2 −225
{-15/7,15/7}
{-15/7,15/7}