Practice
Factor using Difference of Two Squares.a) 9x2 −49y2
(3x +7y)(3x −7y)
(3x +7y)(3x −7y)
b) 49x2 −81y12
(7x +9y6)(7x −9y6)
(7x +9y6)(7x −9y6)
c) 49x2 −100y8
(7x +10y4)(7x −10y4)
(7x +10y4)(7x −10y4)
d) 25x2 −9y4
(5x +3y2)(5x −3y2)
(5x +3y2)(5x −3y2)
e) 25x2 −64y4
(5x +8y2)(5x −8y2)
(5x +8y2)(5x −8y2)
f) 9x2 −4y2
(3x +2y)(3x −2y)
(3x +2y)(3x −2y)
g) 36x2 −49y2
(6x +7y)(6x −7y)
(6x +7y)(6x −7y)
h) 49x2 −9y2
(7x +3y)(7x −3y)
(7x +3y)(7x −3y)
i) 4x2 −49y12
(2x +7y6)(2x −7y6)
(2x +7y6)(2x −7y6)
j) 9x2 −25y2
(3x +5y)(3x −5y)
(3x +5y)(3x −5y)