Practice
Solve for x.a) 0 = 36x2 −49
{-7/6,7/6}
{-7/6,7/6}
b) 16x2 =81
{-9/4,9/4}
{-9/4,9/4}
c) 0 = 81x2 −196
{-14/9,14/9}
{-14/9,14/9}
d) 0 = 4x2 −9
{-3/2,3/2}
{-3/2,3/2}
e) 9x2 =4
{-2/3,2/3}
{-2/3,2/3}
f) 49x2 =225
{-15/7,15/7}
{-15/7,15/7}
g) 0 = 9x2 −100
{-10/3,10/3}
{-10/3,10/3}
h) 121 = 36x2
{-11/6,11/6}
{-11/6,11/6}
i) 9x2 −49 = 0
{-7/3,7/3}
{-7/3,7/3}
j) 0 = 25x2 −4
{-2/5,2/5}
{-2/5,2/5}