Предмет: Алгебра, автор: зир1

упростит е выражение (у-4) (у+2)-(у-2)в квадрате

Ответы

Автор ответа: Аноним
0
= y^2 + 2y - 4y - 8 - ( y^2 - 4y + 4 ) = y^2 - 2y - 8 - y^2 + 4y - 4 = 2y - 12
Автор ответа: Мулеева17
0
(y-4)(y+2)-(y-2)²=y²+2y-4y-8-(y-2)²=y²-2y-8-(y²-2*y*2+2²)=y²-2y-8-(y²-4y+4)=y²-2y-8-y²+4y-4=2y-12
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