Practice
Factor using Difference of Two Squares.a) 9x2 −49y2
(3x +7y)(3x −7y)
(3x +7y)(3x −7y)
b) 81x12 −64y2
(9x6 +8y)(9x6 −8y)
(9x6 +8y)(9x6 −8y)
c) 49x12 −64y2
(7x6 +8y)(7x6 −8y)
(7x6 +8y)(7x6 −8y)
d) 25x2 −121y2
(5x +11y)(5x −11y)
(5x +11y)(5x −11y)
e) 81x2 −64y8
(9x +8y4)(9x −8y4)
(9x +8y4)(9x −8y4)
f) 49x4 −16y2
(7x2 +4y)(7x2 −4y)
(7x2 +4y)(7x2 −4y)
g) 9x2 −4y2
(3x +2y)(3x −2y)
(3x +2y)(3x −2y)
h) 36x2 −121y8
(6x +11y4)(6x −11y4)
(6x +11y4)(6x −11y4)
i) 25x2 −121y12
(5x +11y6)(5x −11y6)
(5x +11y6)(5x −11y6)
j) 9x8 −49y2
(3x4 +7y)(3x4 −7y)
(3x4 +7y)(3x4 −7y)