Practice
Factor using Difference of Two Squares.a) 9x2 −25
(3x +5)(3x −5)
(3x +5)(3x −5)
b) 36x4 −121
(6x2 +11)(6x2 −11)
(6x2 +11)(6x2 −11)
c) 4x4 −81
(2x2 +9)(2x2 −9)
(2x2 +9)(2x2 −9)
d) 49x2 −9
(7x +3)(7x −3)
(7x +3)(7x −3)
e) 81x8 −100
(9x4 +10)(9x4 −10)
(9x4 +10)(9x4 −10)
f) 49x8 −16
(7x4 +4)(7x4 −4)
(7x4 +4)(7x4 −4)
g) 64x4 −9
(8x2 +3)(8x2 −3)
(8x2 +3)(8x2 −3)
h) 4x2 −25
(2x +5)(2x −5)
(2x +5)(2x −5)
i) 9x2 −25
(3x +5)(3x −5)
(3x +5)(3x −5)
j) 16x2 −49
(4x +7)(4x −7)
(4x +7)(4x −7)