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