Practice
Solve for x.a) 6x2 + 7x − 20 = 0
{4/3,-5/2}
{4/3,-5/2}
b) 7x2 + 34x − 5 = 0
{1/7,-5}
{1/7,-5}
c) 20x2 − 39x + 7 = 0
{1/5,7/4}
{1/5,7/4}
d) 14x2 + 13x − 12 = 0
{4/7,-3/2}
{4/7,-3/2}
e) 3x2 + 22x + 7 = 0
{-1/3,-7}
{-1/3,-7}
f) 12x2 + 7x − 12 = 0
{-4/3,3/4}
{-4/3,3/4}
g) 3x2 − 19x + 20 = 0
{4/3,5}
{4/3,5}
h) 28x2 + 33x − 28 = 0
{4/7,-7/4}
{4/7,-7/4}
i) 3x2 − 17x + 10 = 0
{2/3,5}
{2/3,5}
j) 5x2 − 31x − 28 = 0
{-4/5,7}
{-4/5,7}
