Practice
Factor using Difference of Two Squares.a) 9x2 −196y2
(3x +14y)(3x −14y)
(3x +14y)(3x −14y)
b) 81x2 −25y2
(9x +5y)(9x −5y)
(9x +5y)(9x −5y)
c) 49x2 −64y2
(7x +8y)(7x −8y)
(7x +8y)(7x −8y)
d) 25x2 −49y2
(5x +7y)(5x −7y)
(5x +7y)(5x −7y)
e) 25x2 −169y2
(5x +13y)(5x −13y)
(5x +13y)(5x −13y)
f) 81x8 −49y2
(9x4 +7y)(9x4 −7y)
(9x4 +7y)(9x4 −7y)
g) 9x2 −100y2
(3x +10y)(3x −10y)
(3x +10y)(3x −10y)
h) 64x12 −49y2
(8x6 +7y)(8x6 −7y)
(8x6 +7y)(8x6 −7y)
i) 25x2 −9y2
(5x +3y)(5x −3y)
(5x +3y)(5x −3y)
j) 25x12 −81y2
(5x6 +9y)(5x6 −9y)
(5x6 +9y)(5x6 −9y)