Practice
Factor using Difference of Two Squares.a) 81x2 −25
(9x +5)(9x −5)
(9x +5)(9x −5)
b) 49x2 −144
(7x +12)(7x −12)
(7x +12)(7x −12)
c) 9x2 −100
(3x +10)(3x −10)
(3x +10)(3x −10)
d) 9x8 −4
(3x4 +2)(3x4 −2)
(3x4 +2)(3x4 −2)
e) 64x2 −81
(8x +9)(8x −9)
(8x +9)(8x −9)
f) 49x2 −121
(7x +11)(7x −11)
(7x +11)(7x −11)
g) 81x2 −49
(9x +7)(9x −7)
(9x +7)(9x −7)
h) 16x2 −81
(4x +9)(4x −9)
(4x +9)(4x −9)
i) 25x2 −4
(5x +2)(5x −2)
(5x +2)(5x −2)
j) 16x4 −169
(4x2 +13)(4x2 −13)
(4x2 +13)(4x2 −13)