Practice
Solve for x.a) 0 = 49x2 −144
{-12/7,12/7}
{-12/7,12/7}
b) 169 = 4x2
{-13/2,13/2}
{-13/2,13/2}
c) 36 = 25x2
{-6/5,6/5}
{-6/5,6/5}
d) 9 = 49x2
{-3/7,3/7}
{-3/7,3/7}
e) 36 = 25x2
{-6/5,6/5}
{-6/5,6/5}
f) 0 = 36x2 −169
{-13/6,13/6}
{-13/6,13/6}
g) 169 = 64x2
{-13/8,13/8}
{-13/8,13/8}
h) 25x2 −121 = 0
{-11/5,11/5}
{-11/5,11/5}
i) 0 = 25x2 −16
{-4/5,4/5}
{-4/5,4/5}
j) 9x2 −16 = 0
{-4/3,4/3}
{-4/3,4/3}