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a) (t-1)(t+1)
----------- = t-1
(t+1)
b) (a-2)(a+2)
--------------- = a-2
(a+2)
c) (2x-5y)(2x+5y)
---------------------- = 2x+5y
(2x-5y)
d) (7ab^4-c^2)(7ab^4+c^2)
----------------------------------- = 7ab^4+c^2
(7ab^4-c^2)
e) (6a^2-11b^3)(6a^2+11b^3)
------------------------------------ = 6a^2-11b^3
(6a^2+11b^3)
:)
----------- = t-1
(t+1)
b) (a-2)(a+2)
--------------- = a-2
(a+2)
c) (2x-5y)(2x+5y)
---------------------- = 2x+5y
(2x-5y)
d) (7ab^4-c^2)(7ab^4+c^2)
----------------------------------- = 7ab^4+c^2
(7ab^4-c^2)
e) (6a^2-11b^3)(6a^2+11b^3)
------------------------------------ = 6a^2-11b^3
(6a^2+11b^3)
:)
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