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


Practice

Solve for x.
a)    1x2 +7x−5 = 0
-7/2 ± 69/2

b)    -7x2 −2x+7 = 0
-1/7 ± 52/7

c)    -1x2 +6x+9 = 0
3 ± 32

d)    5x2 −5x−9 = 0
1/2 ± 205/10

e)    6x2 −3x−7 = 0
1/4 ± 177/12

f)    2x2 +9x+5 = 0
-9/4 ± 41/4

g)    -3x2 +x+1 = 0
1/6 ± 13/6

h)    -3x2 −9x+1 = 0
-3/2 ± 93/6

i)    4x2 −8x−9 = 0
1 ± 13/2

j)    -6x2 +x+8 = 0
1/12 ± 193/12