Practice
Factor using Difference of Two Squares.a) 9x4 −64y4
(3x2 +8y2)(3x2 −8y2)
(3x2 +8y2)(3x2 −8y2)
b) 81x2 −49y2
(9x +7y)(9x −7y)
(9x +7y)(9x −7y)
c) 81x2 −16y8
(9x +4y4)(9x −4y4)
(9x +4y4)(9x −4y4)
d) 81x2 −25y2
(9x +5y)(9x −5y)
(9x +5y)(9x −5y)
e) 49x2 −4y2
(7x +2y)(7x −2y)
(7x +2y)(7x −2y)
f) 49x2 −144y2
(7x +12y)(7x −12y)
(7x +12y)(7x −12y)
g) 16x2 −225y2
(4x +15y)(4x −15y)
(4x +15y)(4x −15y)
h) 49x2 −81y12
(7x +9y6)(7x −9y6)
(7x +9y6)(7x −9y6)
i) 36x2 −25y2
(6x +5y)(6x −5y)
(6x +5y)(6x −5y)
j) 9x2 −169y2
(3x +13y)(3x −13y)
(3x +13y)(3x −13y)