Practice
Solve for x.a) 9x2 =121
{-11/3,11/3}
{-11/3,11/3}
b) 9 = 16x2
{-3/4,3/4}
{-3/4,3/4}
c) 49x2 −64 = 0
{-8/7,8/7}
{-8/7,8/7}
d) 144 = 49x2
{-12/7,12/7}
{-12/7,12/7}
e) 25x2 −121 = 0
{-11/5,11/5}
{-11/5,11/5}
f) 64x2 −81 = 0
{-9/8,9/8}
{-9/8,9/8}
g) 49x2 =144
{-12/7,12/7}
{-12/7,12/7}
h) 16x2 −9 = 0
{-3/4,3/4}
{-3/4,3/4}
i) 25x2 −169 = 0
{-13/5,13/5}
{-13/5,13/5}
j) 0 = 64x2 −25
{-5/8,5/8}
{-5/8,5/8}