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


Practice

Solve for x.
a)    -2x2 +7x+2 = 0
7/4 ± 65/4

b)    6x2 +5x−8 = 0
-5/12 ± 217/12

c)    5x2 −2x−9 = 0
1/5 ± 46/5

d)    1x2 −6x−4 = 0
3 ± 13

e)    -9x2 −9x+3 = 0
-1/2 ± 21/6

f)    6x2 +4x−1 = 0
-1/3 ± 10/6

g)    1x2 +3x−1 = 0
-3/2 ± 13/2

h)    3x2 +6x−8 = 0
-1 ± 33/3

i)    -4x2 +4x+7 = 0
1/2 ± 2

j)    -1x2 −7x+1 = 0
-7/2 ± 53/2