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