Practice
Solve for x.a) 4x2 =225
{-15/2,15/2}
{-15/2,15/2}
b) 0 = 36x2 −49
{-7/6,7/6}
{-7/6,7/6}
c) 64x2 −121 = 0
{-11/8,11/8}
{-11/8,11/8}
d) 36x2 −169 = 0
{-13/6,13/6}
{-13/6,13/6}
e) 16x2 −225 = 0
{-15/4,15/4}
{-15/4,15/4}
f) 64x2 =121
{-11/8,11/8}
{-11/8,11/8}
g) 25x2 −9 = 0
{-3/5,3/5}
{-3/5,3/5}
h) 0 = 16x2 −25
{-5/4,5/4}
{-5/4,5/4}
i) 0 = 81x2 −169
{-13/9,13/9}
{-13/9,13/9}
j) 49x2 −100 = 0
{-10/7,10/7}
{-10/7,10/7}