Practice
Factor using Difference of Two Squares.a) 81x2 −169
(9x +13)(9x −13)
(9x +13)(9x −13)
b) 16x4 −225
(4x2 +15)(4x2 −15)
(4x2 +15)(4x2 −15)
c) 25x2 −121
(5x +11)(5x −11)
(5x +11)(5x −11)
d) 16x2 −225
(4x +15)(4x −15)
(4x +15)(4x −15)
e) 64x2 −49
(8x +7)(8x −7)
(8x +7)(8x −7)
f) 25x4 −49
(5x2 +7)(5x2 −7)
(5x2 +7)(5x2 −7)
g) 36x2 −121
(6x +11)(6x −11)
(6x +11)(6x −11)
h) 16x2 −169
(4x +13)(4x −13)
(4x +13)(4x −13)
i) 9x2 −100
(3x +10)(3x −10)
(3x +10)(3x −10)
j) 4x2 −9
(2x +3)(2x −3)
(2x +3)(2x −3)