abcd Quadratic Equations - Quadratic Formula(L2)
Quadratic Equations - Quadratic Formula(L2)


Practice

Solve for x.
a)    7x2 +3x−6 = 0
-3/14 ± 177/14

b)    -6x2 +6x−1 = 0
1/2 ± 3/6

c)    8x2 −4x−7 = 0
1/4 ± 15/4

d)    3x2 +6x−4 = 0
-1 ± 21/3

e)    -9x2 −9x+5 = 0
-1/2 ± 29/6

f)    8x2 +2x−2 = 0
-1/8 ± 17/8

g)    7x2 −9x−3 = 0
9/14 ± 165/14

h)    -3x2 −9x+4 = 0
-3/2 ± 129/6

i)    1x2 −8x−5 = 0
4 ± 21

j)    -8x2 +2x+8 = 0
1/8 ± 65/8