Practice
Factor using Difference of Two Squares.a) 81x2 −16y4
(9x +4y2)(9x −4y2)
(9x +4y2)(9x −4y2)
b) 25x2 −121y2
(5x +11y)(5x −11y)
(5x +11y)(5x −11y)
c) 64x2 −9y2
(8x +3y)(8x −3y)
(8x +3y)(8x −3y)
d) 25x2 −49y2
(5x +7y)(5x −7y)
(5x +7y)(5x −7y)
e) 64x4 −121y2
(8x2 +11y)(8x2 −11y)
(8x2 +11y)(8x2 −11y)
f) 49x2 −81y2
(7x +9y)(7x −9y)
(7x +9y)(7x −9y)
g) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
h) 81x2 −49y2
(9x +7y)(9x −7y)
(9x +7y)(9x −7y)
i) 16x2 −49y12
(4x +7y6)(4x −7y6)
(4x +7y6)(4x −7y6)
j) 49x8 −25y2
(7x4 +5y)(7x4 −5y)
(7x4 +5y)(7x4 −5y)