Practice
Factor using Difference of Two Squares.a) 16x2 −81y2
(4x +9y)(4x −9y)
(4x +9y)(4x −9y)
b) 9x2 −121y2
(3x +11y)(3x −11y)
(3x +11y)(3x −11y)
c) 49x2 −9y2
(7x +3y)(7x −3y)
(7x +3y)(7x −3y)
d) 49x12 −64y2
(7x6 +8y)(7x6 −8y)
(7x6 +8y)(7x6 −8y)
e) 4x2 −225y2
(2x +15y)(2x −15y)
(2x +15y)(2x −15y)
f) 49x2 −100y2
(7x +10y)(7x −10y)
(7x +10y)(7x −10y)
g) 64x2 −81y4
(8x +9y2)(8x −9y2)
(8x +9y2)(8x −9y2)
h) 49x2 −225y2
(7x +15y)(7x −15y)
(7x +15y)(7x −15y)
i) 49x2 −64y2
(7x +8y)(7x −8y)
(7x +8y)(7x −8y)
j) 16x8 −49y2
(4x4 +7y)(4x4 −7y)
(4x4 +7y)(4x4 −7y)