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


Practice

Solve for x.
a)    9x2 −100 = 0
{-10/3,10/3}

b)    49x2 −225 = 0
{-15/7,15/7}

c)    225 = 16x2
{-15/4,15/4}

d)    64x2 −81 = 0
{-9/8,9/8}

e)    9x2 =100
{-10/3,10/3}

f)    9x2 −16 = 0
{-4/3,4/3}

g)    25x2 −169 = 0
{-13/5,13/5}

h)    4x2 =49
{-7/2,7/2}

i)    0 = 4x2 −25
{-5/2,5/2}

j)    4x2 =9
{-3/2,3/2}