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