Practice
Factor using Difference of Two Squares.a) 25x2 −49y2
(5x +7y)(5x −7y)
(5x +7y)(5x −7y)
b) 64x2 −169y2
(8x +13y)(8x −13y)
(8x +13y)(8x −13y)
c) 49x4 −9y2
(7x2 +3y)(7x2 −3y)
(7x2 +3y)(7x2 −3y)
d) 49x2 −64y2
(7x +8y)(7x −8y)
(7x +8y)(7x −8y)
e) 49x2 −36y8
(7x +6y4)(7x −6y4)
(7x +6y4)(7x −6y4)
f) 4x2 −225y2
(2x +15y)(2x −15y)
(2x +15y)(2x −15y)
g) 16x2 −81y2
(4x +9y)(4x −9y)
(4x +9y)(4x −9y)
h) 4x2 −9y2
(2x +3y)(2x −3y)
(2x +3y)(2x −3y)
i) 64x2 −49y2
(8x +7y)(8x −7y)
(8x +7y)(8x −7y)
j) 81x12 −64y2
(9x6 +8y)(9x6 −8y)
(9x6 +8y)(9x6 −8y)