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Identidades 6
Contributed by:
La Miranda
1.
(x+3)(x-3)
2.
(x-5)(x+5)
3.
(y+6)(y-6)
4.
(y-12)(y+12)
5.
(2x+4)(2x-4)
6.
(3x+6)(3x-6)
7.
(5x+2y)(5x-2y)
8.
(7x+3a)(7x-3a)
9.
(8x+2)(8x-2)
10.
(15x-4)(15x+4)
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