Practice
Factor using Difference of Two Squares.a) 49x2 −225y4
(7x +15y2)(7x −15y2)
(7x +15y2)(7x −15y2)
b) 4x4 −25y12
(2x2 +5y6)(2x2 −5y6)
(2x2 +5y6)(2x2 −5y6)
c) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
d) 9x2 −16y2
(3x +4y)(3x −4y)
(3x +4y)(3x −4y)
e) 4x2 −49y8
(2x +7y4)(2x −7y4)
(2x +7y4)(2x −7y4)
f) 49x2 −9y2
(7x +3y)(7x −3y)
(7x +3y)(7x −3y)
g) 25x2 −36y2
(5x +6y)(5x −6y)
(5x +6y)(5x −6y)
h) 49x2 −81y4
(7x +9y2)(7x −9y2)
(7x +9y2)(7x −9y2)
i) 25x2 −16y2
(5x +4y)(5x −4y)
(5x +4y)(5x −4y)
j) 36x2 −121y2
(6x +11y)(6x −11y)
(6x +11y)(6x −11y)