Ответ:
2(х-2)(х+2)-(х-4)(х+4)+(х-3)(х+3)+х=2(х²-4)-(х²-16)+х²-9+х=2х²-8-х²+16+х²-9+х=2х²-1+х.
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Ответ:
2(х-2)(х+2)-(х-4)(х+4)+(х-3)(х+3)+х=2(х²-4)-(х²-16)+х²-9+х=2х²-8-х²+16+х²-9+х=2х²-1+х.