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


Practice

Solve for x.
a)    4x2 −3x−7 = 0
{1.75,-1}

b)    -9x2 +4x+3 = 0
{-0.3964,0.8409}

c)    -2x2 −6x+8 = 0
{-4,1}

d)    -6x2 +2x+2 = 0
{-0.4343,0.7676}

e)    -5x2 +5x+9 = 0
{-0.9318,1.9318}

f)    4x2 +6x−5 = 0
{0.5963,-2.0963}

g)    -2x2 +9x+1 = 0
{-0.1085,4.6085}

h)    4x2 −4x−5 = 0
{1.7247,-0.7247}

i)    4x2 −9x−6 = 0
{2.788,-0.538}

j)    -5x2 +3x+3 = 0
{-0.5307,1.1307}