Practice
Factor using Difference of Two Squares.a) 49x2 −9
(7x +3)(7x −3)
(7x +3)(7x −3)
b) 25x4 −121
(5x2 +11)(5x2 −11)
(5x2 +11)(5x2 −11)
c) 4x2 −121
(2x +11)(2x −11)
(2x +11)(2x −11)
d) 81x2 −64
(9x +8)(9x −8)
(9x +8)(9x −8)
e) 36x2 −49
(6x +7)(6x −7)
(6x +7)(6x −7)
f) 16x2 −121
(4x +11)(4x −11)
(4x +11)(4x −11)
g) 9x2 −25
(3x +5)(3x −5)
(3x +5)(3x −5)
h) 64x2 −81
(8x +9)(8x −9)
(8x +9)(8x −9)
i) 16x2 −169
(4x +13)(4x −13)
(4x +13)(4x −13)
j) 64x4 −49
(8x2 +7)(8x2 −7)
(8x2 +7)(8x2 −7)