Practice
Factor using Difference of Two Squares.a) 81x2 −64y2
(9x +8y)(9x −8y)
(9x +8y)(9x −8y)
b) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
c) 64x2 −121y4
(8x +11y2)(8x −11y2)
(8x +11y2)(8x −11y2)
d) 81x2 −121y8
(9x +11y4)(9x −11y4)
(9x +11y4)(9x −11y4)
e) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)
f) 25x2 −4y2
(5x +2y)(5x −2y)
(5x +2y)(5x −2y)
g) 25x2 −36y2
(5x +6y)(5x −6y)
(5x +6y)(5x −6y)
h) 36x8 −25y2
(6x4 +5y)(6x4 −5y)
(6x4 +5y)(6x4 −5y)
i) 4x2 −169y2
(2x +13y)(2x −13y)
(2x +13y)(2x −13y)
j) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)