Предмет: Алгебра, автор: xhty

помогите разложить на множители
x(y-z)+3(z-y)
a(b-c)-b(c-b)
m(n-1)+k(1-n)

Ответы

Автор ответа: lesnikjocker

1) x(y-z) - 3(y-z) = (y-z)(x-3)
2) a(b-c) + b(b-c) = (b-c)(a+b)
3) m(n-1) - k(n-1) = (n-1)(m-k)

xhty: а вы случайно не можете обосновать???

lesnikjocker: Могу. Со вторых скобок в каждом случае я вынесла минус и в скобках поменяла знаки, а потом вынесла общую скобку за скобку(тавтология, ну, да ладно).

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