Practice
Factor using Difference of Two Squares.a) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)
b) 64x2 −225y2
(8x +15y)(8x −15y)
(8x +15y)(8x −15y)
c) 16x8 −49y2
(4x4 +7y)(4x4 −7y)
(4x4 +7y)(4x4 −7y)
d) 81x2 −49y8
(9x +7y4)(9x −7y4)
(9x +7y4)(9x −7y4)
e) 49x2 −225y12
(7x +15y6)(7x −15y6)
(7x +15y6)(7x −15y6)
f) 16x2 −225y2
(4x +15y)(4x −15y)
(4x +15y)(4x −15y)
g) 81x2 −25y2
(9x +5y)(9x −5y)
(9x +5y)(9x −5y)
h) 25x8 −36y2
(5x4 +6y)(5x4 −6y)
(5x4 +6y)(5x4 −6y)
i) 25x2 −64y2
(5x +8y)(5x −8y)
(5x +8y)(5x −8y)
j) 25x2 −9y2
(5x +3y)(5x −3y)
(5x +3y)(5x −3y)