Practice
Factor using Difference of Two Squares.a) 81x2 −100y2
(9x +10y)(9x −10y)
(9x +10y)(9x −10y)
b) 9x2 −169y4
(3x +13y2)(3x −13y2)
(3x +13y2)(3x −13y2)
c) 81x2 −196y12
(9x +14y6)(9x −14y6)
(9x +14y6)(9x −14y6)
d) 4x2 −81y8
(2x +9y4)(2x −9y4)
(2x +9y4)(2x −9y4)
e) 64x4 −169y8
(8x2 +13y4)(8x2 −13y4)
(8x2 +13y4)(8x2 −13y4)
f) 25x2 −16y12
(5x +4y6)(5x −4y6)
(5x +4y6)(5x −4y6)
g) 49x2 −169y4
(7x +13y2)(7x −13y2)
(7x +13y2)(7x −13y2)
h) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
i) 4x12 −81y2
(2x6 +9y)(2x6 −9y)
(2x6 +9y)(2x6 −9y)
j) 9x2 −196y8
(3x +14y4)(3x −14y4)
(3x +14y4)(3x −14y4)