Practice
Solve for x.a) 49x2 =121
{-11/7,11/7}
{-11/7,11/7}
b) 0 = 64x2 −81
{-9/8,9/8}
{-9/8,9/8}
c) 4x2 =121
{-11/2,11/2}
{-11/2,11/2}
d) 9 = 49x2
{-3/7,3/7}
{-3/7,3/7}
e) 225 = 49x2
{-15/7,15/7}
{-15/7,15/7}
f) 4x2 −49 = 0
{-7/2,7/2}
{-7/2,7/2}
g) 81x2 −196 = 0
{-14/9,14/9}
{-14/9,14/9}
h) 0 = 49x2 −81
{-9/7,9/7}
{-9/7,9/7}
i) 81x2 −64 = 0
{-8/9,8/9}
{-8/9,8/9}
j) 49 = 16x2
{-7/4,7/4}
{-7/4,7/4}