Practice
Solve for x.a) x2 − 5x + 4 = 0
{4,1}
{4,1}
b) x2 − 10x + 16 = 0
{8,2}
{8,2}
c) x2 + 3x − 40 = 0
{5,-8}
{5,-8}
d) x2 − x − 30 = 0
{-5,6}
{-5,6}
e) x2 + 4x − 21 = 0
{-7,3}
{-7,3}
f) x2 + 5x − 36 = 0
{-9,4}
{-9,4}
g) x2 − 10x + 9 = 0
{1,9}
{1,9}
h) x2 + 10x + 24 = 0
{-4,-6}
{-4,-6}
i) x2 + 16x + 64 = 0
{-8,-8}
{-8,-8}
j) x2 + 7x + 6 = 0
{-1,-6}
{-1,-6}
