Practice
Solve for x.a) 20x2 − 27x − 14 = 0
{-2/5,7/4}
{-2/5,7/4}
b) 6x2 + 7x − 20 = 0
{4/3,-5/2}
{4/3,-5/2}
c) 28x2 + 31x − 5 = 0
{1/7,-5/4}
{1/7,-5/4}
d) 6x2 − 17x − 14 = 0
{-2/3,7/2}
{-2/3,7/2}
e) 5x2 − 36x + 7 = 0
{1/5,7}
{1/5,7}
f) 6x2 − 29x + 28 = 0
{4/3,7/2}
{4/3,7/2}
g) 12x2 + 11x − 5 = 0
{1/3,-5/4}
{1/3,-5/4}
h) 5x2 − 17x + 6 = 0
{2/5,3}
{2/5,3}
i) 20x2 − 19x − 28 = 0
{-4/5,7/4}
{-4/5,7/4}
j) 20x2 − 9x − 20 = 0
{-4/5,5/4}
{-4/5,5/4}
