Practice
Factor using Difference of Two Squares.a) 25x2 −81y2
(5x +9y)(5x −9y)
(5x +9y)(5x −9y)
b) 25x2 −64y2
(5x +8y)(5x −8y)
(5x +8y)(5x −8y)
c) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)
d) 64x4 −169y2
(8x2 +13y)(8x2 −13y)
(8x2 +13y)(8x2 −13y)
e) 81x2 −121y2
(9x +11y)(9x −11y)
(9x +11y)(9x −11y)
f) 9x12 −169y2
(3x6 +13y)(3x6 −13y)
(3x6 +13y)(3x6 −13y)
g) 49x2 −169y2
(7x +13y)(7x −13y)
(7x +13y)(7x −13y)
h) 25x2 −121y2
(5x +11y)(5x −11y)
(5x +11y)(5x −11y)
i) 49x2 −9y8
(7x +3y4)(7x −3y4)
(7x +3y4)(7x −3y4)
j) 49x8 −121y2
(7x4 +11y)(7x4 −11y)
(7x4 +11y)(7x4 −11y)