Practice
Solve for x.a) 28x2 − 53x + 7 = 0
{1/7,7/4}
{1/7,7/4}
b) 6x2 + 5x − 6 = 0
{2/3,-3/2}
{2/3,-3/2}
c) 12x2 − 17x − 7 = 0
{-1/3,7/4}
{-1/3,7/4}
d) 20x2 − 21x − 5 = 0
{-1/5,5/4}
{-1/5,5/4}
e) 14x2 + 57x + 28 = 0
{-4/7,-7/2}
{-4/7,-7/2}
f) 5x2 + 34x − 7 = 0
{1/5,-7}
{1/5,-7}
g) 3x2 − 25x + 28 = 0
{4/3,7}
{4/3,7}
h) 6x2 + 11x − 10 = 0
{2/3,-5/2}
{2/3,-5/2}
i) 28x2 − 27x − 10 = 0
{-2/7,5/4}
{-2/7,5/4}
j) 28x2 − 13x − 6 = 0
{-2/7,3/4}
{-2/7,3/4}