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


Practice

Solve for x.
a)    -7x2 +9x+6 = 0
9/14 ± 249/14

b)    -1x2 −2x+4 = 0
-1 ± 5

c)    -2x2 +7x+8 = 0
7/4 ± 113/4

d)    -2x2 −7x−4 = 0
-7/4 ± 17/4

e)    -1x2 −9x+2 = 0
-9/2 ± 89/2

f)    8x2 −x−5 = 0
1/16 ± 161/16

g)    -8x2 +8x+3 = 0
1/2 ± 10/4

h)    -4x2 −x+9 = 0
-1/8 ± 145/8

i)    6x2 +2x−7 = 0
-1/6 ± 43/6

j)    -7x2 −9x+3 = 0
-9/14 ± 165/14