Practice
Solve for x.a) 49x2 −4 = 0
{-2/7,2/7}
{-2/7,2/7}
b) 0 = 25x2 −144
{-12/5,12/5}
{-12/5,12/5}
c) 64x2 −225 = 0
{-15/8,15/8}
{-15/8,15/8}
d) 0 = 49x2 −100
{-10/7,10/7}
{-10/7,10/7}
e) 9x2 =169
{-13/3,13/3}
{-13/3,13/3}
f) 16x2 =81
{-9/4,9/4}
{-9/4,9/4}
g) 0 = 36x2 −25
{-5/6,5/6}
{-5/6,5/6}
h) 49x2 =25
{-5/7,5/7}
{-5/7,5/7}
i) 0 = 49x2 −16
{-4/7,4/7}
{-4/7,4/7}
j) 4x2 −225 = 0
{-15/2,15/2}
{-15/2,15/2}