Practice
Factor using Difference of Two Squares.a) 4x2 −81y2
(2x +9y)(2x −9y)
(2x +9y)(2x −9y)
b) 49x2 −81y2
(7x +9y)(7x −9y)
(7x +9y)(7x −9y)
c) 16x8 −49y2
(4x4 +7y)(4x4 −7y)
(4x4 +7y)(4x4 −7y)
d) 4x4 −25y2
(2x2 +5y)(2x2 −5y)
(2x2 +5y)(2x2 −5y)
e) 9x2 −64y12
(3x +8y6)(3x −8y6)
(3x +8y6)(3x −8y6)
f) 25x12 −196y2
(5x6 +14y)(5x6 −14y)
(5x6 +14y)(5x6 −14y)
g) 81x8 −64y2
(9x4 +8y)(9x4 −8y)
(9x4 +8y)(9x4 −8y)
h) 25x4 −36y2
(5x2 +6y)(5x2 −6y)
(5x2 +6y)(5x2 −6y)
i) 49x2 −4y12
(7x +2y6)(7x −2y6)
(7x +2y6)(7x −2y6)
j) 64x2 −25y4
(8x +5y2)(8x −5y2)
(8x +5y2)(8x −5y2)