Practice
Factor using Difference of Two Squares.a) 49x2 −9y2
(7x +3y)(7x −3y)
(7x +3y)(7x −3y)
b) 49x2 −9y2
(7x +3y)(7x −3y)
(7x +3y)(7x −3y)
c) 25x2 −121y4
(5x +11y2)(5x −11y2)
(5x +11y2)(5x −11y2)
d) 25x12 −196y4
(5x6 +14y2)(5x6 −14y2)
(5x6 +14y2)(5x6 −14y2)
e) 49x2 −144y2
(7x +12y)(7x −12y)
(7x +12y)(7x −12y)
f) 64x8 −25y12
(8x4 +5y6)(8x4 −5y6)
(8x4 +5y6)(8x4 −5y6)
g) 81x2 −49y2
(9x +7y)(9x −7y)
(9x +7y)(9x −7y)
h) 4x4 −169y2
(2x2 +13y)(2x2 −13y)
(2x2 +13y)(2x2 −13y)
i) 25x2 −81y2
(5x +9y)(5x −9y)
(5x +9y)(5x −9y)
j) 81x8 −100y8
(9x4 +10y4)(9x4 −10y4)
(9x4 +10y4)(9x4 −10y4)