Practice
Solve for x.a) 28x2 + 45x − 7 = 0
{1/7,-7/4}
{1/7,-7/4}
b) 5x2 + 37x + 14 = 0
{-2/5,-7}
{-2/5,-7}
c) 20x2 − 21x − 5 = 0
{-1/5,5/4}
{-1/5,5/4}
d) 6x2 − 17x + 12 = 0
{4/3,3/2}
{4/3,3/2}
e) 10x2 + 17x + 3 = 0
{-1/5,-3/2}
{-1/5,-3/2}
f) 3x2 − 11x + 6 = 0
{2/3,3}
{2/3,3}
g) 20x2 + 39x + 7 = 0
{-1/5,-7/4}
{-1/5,-7/4}
h) 28x2 + 31x − 5 = 0
{1/7,-5/4}
{1/7,-5/4}
i) 6x2 + 13x − 28 = 0
{4/3,-7/2}
{4/3,-7/2}
j) 12x2 − 5x − 3 = 0
{-1/3,3/4}
{-1/3,3/4}
