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