Practice
Factor using Difference of Two Squares.a) 25x2 −49y8
(5x +7y4)(5x −7y4)
(5x +7y4)(5x −7y4)
b) 49x4 −144y2
(7x2 +12y)(7x2 −12y)
(7x2 +12y)(7x2 −12y)
c) 9x2 −100y2
(3x +10y)(3x −10y)
(3x +10y)(3x −10y)
d) 49x2 −9y2
(7x +3y)(7x −3y)
(7x +3y)(7x −3y)
e) 4x2 −81y2
(2x +9y)(2x −9y)
(2x +9y)(2x −9y)
f) 4x2 −25y4
(2x +5y2)(2x −5y2)
(2x +5y2)(2x −5y2)
g) 49x2 −121y2
(7x +11y)(7x −11y)
(7x +11y)(7x −11y)
h) 9x2 −64y2
(3x +8y)(3x −8y)
(3x +8y)(3x −8y)
i) 9x8 −4y12
(3x4 +2y6)(3x4 −2y6)
(3x4 +2y6)(3x4 −2y6)
j) 64x2 −169y4
(8x +13y2)(8x −13y2)
(8x +13y2)(8x −13y2)