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