Practice
Factor using Difference of Two Squares.a) 49x4 −225y8
(7x2 +15y4)(7x2 −15y4)
(7x2 +15y4)(7x2 −15y4)
b) 81x2 −100y2
(9x +10y)(9x −10y)
(9x +10y)(9x −10y)
c) 64x2 −49y8
(8x +7y4)(8x −7y4)
(8x +7y4)(8x −7y4)
d) 4x2 −169y8
(2x +13y4)(2x −13y4)
(2x +13y4)(2x −13y4)
e) 81x2 −16y2
(9x +4y)(9x −4y)
(9x +4y)(9x −4y)
f) 49x2 −100y4
(7x +10y2)(7x −10y2)
(7x +10y2)(7x −10y2)
g) 9x12 −64y2
(3x6 +8y)(3x6 −8y)
(3x6 +8y)(3x6 −8y)
h) 64x2 −81y4
(8x +9y2)(8x −9y2)
(8x +9y2)(8x −9y2)
i) 16x2 −81y12
(4x +9y6)(4x −9y6)
(4x +9y6)(4x −9y6)
j) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)