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