Practice
Factor using Difference of Two Squares.a) 64x2 −169y2
(8x +13y)(8x −13y)
(8x +13y)(8x −13y)
b) 49x2 −36y2
(7x +6y)(7x −6y)
(7x +6y)(7x −6y)
c) 4x2 −81y2
(2x +9y)(2x −9y)
(2x +9y)(2x −9y)
d) 49x2 −4y2
(7x +2y)(7x −2y)
(7x +2y)(7x −2y)
e) 64x2 −49y2
(8x +7y)(8x −7y)
(8x +7y)(8x −7y)
f) 25x4 −144y2
(5x2 +12y)(5x2 −12y)
(5x2 +12y)(5x2 −12y)
g) 81x2 −4y4
(9x +2y2)(9x −2y2)
(9x +2y2)(9x −2y2)
h) 81x4 −4y2
(9x2 +2y)(9x2 −2y)
(9x2 +2y)(9x2 −2y)
i) 16x2 −81y2
(4x +9y)(4x −9y)
(4x +9y)(4x −9y)
j) 81x2 −169y4
(9x +13y2)(9x −13y2)
(9x +13y2)(9x −13y2)