Practice
Factor using Difference of Two Squares.a) 81x2 −121y2
(9x +11y)(9x −11y)
(9x +11y)(9x −11y)
b) 25x2 −196y4
(5x +14y2)(5x −14y2)
(5x +14y2)(5x −14y2)
c) 81x2 −64y2
(9x +8y)(9x −8y)
(9x +8y)(9x −8y)
d) 4x2 −169y2
(2x +13y)(2x −13y)
(2x +13y)(2x −13y)
e) 64x2 −225y2
(8x +15y)(8x −15y)
(8x +15y)(8x −15y)
f) 4x2 −169y2
(2x +13y)(2x −13y)
(2x +13y)(2x −13y)
g) 16x2 −9y2
(4x +3y)(4x −3y)
(4x +3y)(4x −3y)
h) 81x2 −100y2
(9x +10y)(9x −10y)
(9x +10y)(9x −10y)
i) 25x2 −81y2
(5x +9y)(5x −9y)
(5x +9y)(5x −9y)
j) 9x2 −169y12
(3x +13y6)(3x −13y6)
(3x +13y6)(3x −13y6)