Practice
Solve for x.a) x2 + 13x + 40 = 0
{-8,-5}
{-8,-5}
b) x2 − 8x + 7 = 0
{7,1}
{7,1}
c) x2 + 10x + 21 = 0
{-3,-7}
{-3,-7}
d) x2 + 2x − 48 = 0
{-8,6}
{-8,6}
e) x2 − 7x − 18 = 0
{9,-2}
{9,-2}
f) x2 − 9x + 20 = 0
{5,4}
{5,4}
g) x2 + 14x + 48 = 0
{-8,-6}
{-8,-6}
h) x2 − 9x + 20 = 0
{4,5}
{4,5}
i) x2 − 4x − 45 = 0
{9,-5}
{9,-5}
j) x2 − 5x − 24 = 0
{-3,8}
{-3,8}
