abcd Quadratic Equations - Difference of Two Squares(L2)
Quadratic Equations - Difference of Two Squares(L2)


Practice

Solve for x.
a)    121 = 81x2
{-11/9,11/9}

b)    9x2 =121
{-11/3,11/3}

c)    9x2 =169
{-13/3,13/3}

d)    121 = 81x2
{-11/9,11/9}

e)    9x2 −25 = 0
{-5/3,5/3}

f)    169 = 36x2
{-13/6,13/6}

g)    4x2 =225
{-15/2,15/2}

h)    25x2 =4
{-2/5,2/5}

i)    16x2 −9 = 0
{-3/4,3/4}

j)    0 = 4x2 −49
{-7/2,7/2}