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Автор - marinet2017

Найдите значение выражения (х -3)2 + 2(х–3)(х+2) + (х+2)2, если х = 1/2.

Ответ

Автор - lordlor

-8 - (-12)= -8 + 12 = 4

Ответ

Автор - aspirincoches

(12-3)2+2(12-3)(12+2)=22-6+2(14+1-32-6)= -5+504=304

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