Practice
Factor using Difference of Two Squares.a) x4 −16
(x2 +4)(x2 −4)
(x2 +4)(x2 −4)
b) x2 −81
(x +9)(x −9)
(x +9)(x −9)
c) x2 −225
(x +15)(x −15)
(x +15)(x −15)
d) x2 −81
(x +9)(x −9)
(x +9)(x −9)
e) x2 −196
(x +14)(x −14)
(x +14)(x −14)
f) x2 −16
(x +4)(x −4)
(x +4)(x −4)
g) x2 −121
(x +11)(x −11)
(x +11)(x −11)
h) x12 −49
(x6 +7)(x6 −7)
(x6 +7)(x6 −7)
i) x2 −25
(x +5)(x −5)
(x +5)(x −5)
j) x2 −9
(x +3)(x −3)
(x +3)(x −3)