Practice
Factor using Difference of Two Squares.a) 9x2 −121y2
(3x +11y)(3x −11y)
(3x +11y)(3x −11y)
b) 4x2 −81y8
(2x +9y4)(2x −9y4)
(2x +9y4)(2x −9y4)
c) 25x2 −49y2
(5x +7y)(5x −7y)
(5x +7y)(5x −7y)
d) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
e) 36x2 −169y2
(6x +13y)(6x −13y)
(6x +13y)(6x −13y)
f) 49x2 −121y2
(7x +11y)(7x −11y)
(7x +11y)(7x −11y)
g) 49x2 −225y2
(7x +15y)(7x −15y)
(7x +15y)(7x −15y)
h) 25x2 −144y4
(5x +12y2)(5x −12y2)
(5x +12y2)(5x −12y2)
i) 49x2 −144y2
(7x +12y)(7x −12y)
(7x +12y)(7x −12y)
j) 4x2 −49y2
(2x +7y)(2x −7y)
(2x +7y)(2x −7y)