Упростите выражение x(y-z)-y(x+z)-z(x-y)

Question

Упростите выражение x(y-z)-y(x+z)-z(x-y)

Comments

xy-xz-xy-yz-xz+yz=-2xy

Answer 1

Xy-xz-xy-yz-xz+yz=-2xz
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