Quadratic Equations - Quadratic Formula(L1)


Practice

Solve for x.
a)    8x2 −9x−3 = 0
{1.394,-0.269}

b)    1x2 +7x−4 = 0
{0.5311,-7.5311}

c)    5x2 +5x−9 = 0
{0.9318,-1.9318}

d)    5x2 +9x−8 = 0
{0.6524,-2.4524}

e)    5x2 +9x+1 = 0
{-0.119,-1.681}

f)    -3x2 −8x+3 = 0
{-3,0.3333}

g)    -4x2 −2x+9 = 0
{-1.7707,1.2707}

h)    -4x2 +8x−4 = 0
{1,1}

i)    -1x2 −5x+6 = 0
{-6,1}

j)    3x2 +4x−3 = 0
{0.5352,-1.8685}