Practice
Factor using Difference of Two Squares.a) 81x8 −121y2
(9x4 +11y)(9x4 −11y)
(9x4 +11y)(9x4 −11y)
b) 36x2 −25y2
(6x +5y)(6x −5y)
(6x +5y)(6x −5y)
c) 49x8 −25y2
(7x4 +5y)(7x4 −5y)
(7x4 +5y)(7x4 −5y)
d) 49x4 −64y2
(7x2 +8y)(7x2 −8y)
(7x2 +8y)(7x2 −8y)
e) 81x2 −16y2
(9x +4y)(9x −4y)
(9x +4y)(9x −4y)
f) 16x2 −169y2
(4x +13y)(4x −13y)
(4x +13y)(4x −13y)
g) 4x2 −49y2
(2x +7y)(2x −7y)
(2x +7y)(2x −7y)
h) 4x2 −225y2
(2x +15y)(2x −15y)
(2x +15y)(2x −15y)
i) 49x8 −9y12
(7x4 +3y6)(7x4 −3y6)
(7x4 +3y6)(7x4 −3y6)
j) 16x2 −225y2
(4x +15y)(4x −15y)
(4x +15y)(4x −15y)