Practice
Solve for x.a) 3x2 − 11x − 20 = 0
{-4/3,5}
{-4/3,5}
b) 12x2 − 17x − 7 = 0
{-1/3,7/4}
{-1/3,7/4}
c) 10x2 − 27x − 28 = 0
{-4/5,7/2}
{-4/5,7/2}
d) 5x2 + 17x + 6 = 0
{-2/5,-3}
{-2/5,-3}
e) 20x2 + 41x + 20 = 0
{-4/5,-5/4}
{-4/5,-5/4}
f) 5x2 + 33x − 14 = 0
{2/5,-7}
{2/5,-7}
g) 10x2 + 43x + 28 = 0
{-4/5,-7/2}
{-4/5,-7/2}
h) 10x2 + 7x − 12 = 0
{4/5,-3/2}
{4/5,-3/2}
i) 6x2 − 23x + 20 = 0
{4/3,5/2}
{4/3,5/2}
j) 7x2 + 47x − 14 = 0
{2/7,-7}
{2/7,-7}
