Practice
Factor using Difference of Two Squares.a) 81x2 −100y2
(9x +10y)(9x −10y)
(9x +10y)(9x −10y)
b) 4x2 −225y2
(2x +15y)(2x −15y)
(2x +15y)(2x −15y)
c) 25x2 −9y12
(5x +3y6)(5x −3y6)
(5x +3y6)(5x −3y6)
d) 36x2 −25y4
(6x +5y2)(6x −5y2)
(6x +5y2)(6x −5y2)
e) 81x2 −169y2
(9x +13y)(9x −13y)
(9x +13y)(9x −13y)
f) 9x2 −196y12
(3x +14y6)(3x −14y6)
(3x +14y6)(3x −14y6)
g) 81x4 −121y2
(9x2 +11y)(9x2 −11y)
(9x2 +11y)(9x2 −11y)
h) 9x2 −4y2
(3x +2y)(3x −2y)
(3x +2y)(3x −2y)
i) 49x2 −121y8
(7x +11y4)(7x −11y4)
(7x +11y4)(7x −11y4)
j) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)