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