Practice
Factor using Difference of Two Squares.a) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)
b) 49x2 −4y2
(7x +2y)(7x −2y)
(7x +2y)(7x −2y)
c) 49x2 −25y2
(7x +5y)(7x −5y)
(7x +5y)(7x −5y)
d) 81x2 −25y2
(9x +5y)(9x −5y)
(9x +5y)(9x −5y)
e) 16x2 −81y2
(4x +9y)(4x −9y)
(4x +9y)(4x −9y)
f) 49x2 −225y2
(7x +15y)(7x −15y)
(7x +15y)(7x −15y)
g) 9x4 −100y2
(3x2 +10y)(3x2 −10y)
(3x2 +10y)(3x2 −10y)
h) 81x8 −64y2
(9x4 +8y)(9x4 −8y)
(9x4 +8y)(9x4 −8y)
i) 4x12 −81y8
(2x6 +9y4)(2x6 −9y4)
(2x6 +9y4)(2x6 −9y4)
j) 49x2 −16y4
(7x +4y2)(7x −4y2)
(7x +4y2)(7x −4y2)