Practice
Solve for x.a) 0 = 25x2 −144
{-12/5,12/5}
{-12/5,12/5}
b) 0 = 49x2 −16
{-4/7,4/7}
{-4/7,4/7}
c) 36x2 −169 = 0
{-13/6,13/6}
{-13/6,13/6}
d) 36x2 =25
{-5/6,5/6}
{-5/6,5/6}
e) 16x2 =169
{-13/4,13/4}
{-13/4,13/4}
f) 25x2 −16 = 0
{-4/5,4/5}
{-4/5,4/5}
g) 16 = 81x2
{-4/9,4/9}
{-4/9,4/9}
h) 4 = 49x2
{-2/7,2/7}
{-2/7,2/7}
i) 0 = 16x2 −25
{-5/4,5/4}
{-5/4,5/4}
j) 9 = 64x2
{-3/8,3/8}
{-3/8,3/8}