Practice
Factor using Difference of Two Squares.a) 49x2 −16y2
(7x +4y)(7x −4y)
(7x +4y)(7x −4y)
b) 4x2 −81y2
(2x +9y)(2x −9y)
(2x +9y)(2x −9y)
c) 25x12 −4y2
(5x6 +2y)(5x6 −2y)
(5x6 +2y)(5x6 −2y)
d) 9x2 −121y2
(3x +11y)(3x −11y)
(3x +11y)(3x −11y)
e) 16x2 −169y2
(4x +13y)(4x −13y)
(4x +13y)(4x −13y)
f) 25x2 −9y2
(5x +3y)(5x −3y)
(5x +3y)(5x −3y)
g) 4x2 −49y2
(2x +7y)(2x −7y)
(2x +7y)(2x −7y)
h) 25x2 −169y2
(5x +13y)(5x −13y)
(5x +13y)(5x −13y)
i) 81x8 −4y12
(9x4 +2y6)(9x4 −2y6)
(9x4 +2y6)(9x4 −2y6)
j) 25x2 −49y2
(5x +7y)(5x −7y)
(5x +7y)(5x −7y)