Practice
Factor using Difference of Two Squares.a) 49x2 −16y2
(7x +4y)(7x −4y)
(7x +4y)(7x −4y)
b) 64x8 −25y12
(8x4 +5y6)(8x4 −5y6)
(8x4 +5y6)(8x4 −5y6)
c) 25x2 −9y2
(5x +3y)(5x −3y)
(5x +3y)(5x −3y)
d) 16x4 −25y2
(4x2 +5y)(4x2 −5y)
(4x2 +5y)(4x2 −5y)
e) 81x2 −64y2
(9x +8y)(9x −8y)
(9x +8y)(9x −8y)
f) 16x2 −169y2
(4x +13y)(4x −13y)
(4x +13y)(4x −13y)
g) 49x2 −64y8
(7x +8y4)(7x −8y4)
(7x +8y4)(7x −8y4)
h) 64x2 −9y2
(8x +3y)(8x −3y)
(8x +3y)(8x −3y)
i) 49x4 −100y2
(7x2 +10y)(7x2 −10y)
(7x2 +10y)(7x2 −10y)
j) 81x2 −16y2
(9x +4y)(9x −4y)
(9x +4y)(9x −4y)