Practice
Solve for x.a) x2 + 17x + 72 = 0
{-9,-8}
{-9,-8}
b) x2 + 7x + 12 = 0
{-3,-4}
{-3,-4}
c) x2 − 8x − 9 = 0
{-1,9}
{-1,9}
d) x2 + 3x − 10 = 0
{-5,2}
{-5,2}
e) x2 − 3x − 28 = 0
{7,-4}
{7,-4}
f) x2 − 5x + 4 = 0
{4,1}
{4,1}
g) x2 + 6x − 27 = 0
{3,-9}
{3,-9}
h) x2 + 5x − 6 = 0
{1,-6}
{1,-6}
i) x2 + x − 30 = 0
{5,-6}
{5,-6}
j) x2 + 12x + 27 = 0
{-9,-3}
{-9,-3}