Practice
Factor using Difference of Two Squares.a) 16x2 −225y2
(4x +15y)(4x −15y)
(4x +15y)(4x −15y)
b) 49x4 −169y2
(7x2 +13y)(7x2 −13y)
(7x2 +13y)(7x2 −13y)
c) 49x2 −4y8
(7x +2y4)(7x −2y4)
(7x +2y4)(7x −2y4)
d) 49x2 −121y2
(7x +11y)(7x −11y)
(7x +11y)(7x −11y)
e) 4x4 −49y4
(2x2 +7y2)(2x2 −7y2)
(2x2 +7y2)(2x2 −7y2)
f) 4x2 −225y2
(2x +15y)(2x −15y)
(2x +15y)(2x −15y)
g) 81x2 −121y2
(9x +11y)(9x −11y)
(9x +11y)(9x −11y)
h) 81x4 −64y2
(9x2 +8y)(9x2 −8y)
(9x2 +8y)(9x2 −8y)
i) 25x2 −169y2
(5x +13y)(5x −13y)
(5x +13y)(5x −13y)
j) 81x2 −16y2
(9x +4y)(9x −4y)
(9x +4y)(9x −4y)