abcd Quadratic Equations - Quadratic Formula(L1)
Quadratic Equations - Quadratic Formula(L1)


Practice

Solve for x.
a)    9x2 −8x−9 = 0
{1.5388,-0.6499}

b)    4x2 −6x−7 = 0
{2.2707,-0.7707}

c)    -2x2 −3x+2 = 0
{-2,0.5}

d)    -2x2 −9x−9 = 0
{-3,-1.5}

e)    -1x2 −7x−3 = 0
{-6.5414,-0.4586}

f)    8x2 +3x−7 = 0
{0.7665,-1.1415}

g)    -4x2 +6x+7 = 0
{-0.7707,2.2707}

h)    -4x2 −8x−3 = 0
{-1.5,-0.5}

i)    -1x2 −2x+5 = 0
{-3.4495,1.4495}

j)    -7x2 −8x+1 = 0
{-1.2565,0.1137}