Practice
Factor using Difference of Two Squares.a) 25x8 −81y2
(5x4 +9y)(5x4 −9y)
(5x4 +9y)(5x4 −9y)
b) 9x2 −49y2
(3x +7y)(3x −7y)
(3x +7y)(3x −7y)
c) 4x8 −121y2
(2x4 +11y)(2x4 −11y)
(2x4 +11y)(2x4 −11y)
d) 81x4 −4y2
(9x2 +2y)(9x2 −2y)
(9x2 +2y)(9x2 −2y)
e) 25x2 −169y2
(5x +13y)(5x −13y)
(5x +13y)(5x −13y)
f) 49x12 −4y4
(7x6 +2y2)(7x6 −2y2)
(7x6 +2y2)(7x6 −2y2)
g) 81x2 −196y2
(9x +14y)(9x −14y)
(9x +14y)(9x −14y)
h) 49x2 −225y2
(7x +15y)(7x −15y)
(7x +15y)(7x −15y)
i) 81x4 −169y2
(9x2 +13y)(9x2 −13y)
(9x2 +13y)(9x2 −13y)
j) 49x2 −81y2
(7x +9y)(7x −9y)
(7x +9y)(7x −9y)