Practice
Solve for x.a) 121 = 81x2
{-11/9,11/9}
{-11/9,11/9}
b) 9 = 16x2
{-3/4,3/4}
{-3/4,3/4}
c) 64x2 =81
{-9/8,9/8}
{-9/8,9/8}
d) 25x2 =169
{-13/5,13/5}
{-13/5,13/5}
e) 0 = 49x2 −81
{-9/7,9/7}
{-9/7,9/7}
f) 81x2 =169
{-13/9,13/9}
{-13/9,13/9}
g) 0 = 25x2 −4
{-2/5,2/5}
{-2/5,2/5}
h) 9x2 −169 = 0
{-13/3,13/3}
{-13/3,13/3}
i) 0 = 49x2 −16
{-4/7,4/7}
{-4/7,4/7}
j) 9x2 =64
{-8/3,8/3}
{-8/3,8/3}