10(1-z)^2+20z упростите выражение. Created by milashka99a. algebra-ru

10(1-z)^2+20z упростите выражение...

July 2021 1 19 Report

10(1-z)^2+20z упростите выражение

KitaevaEG (1-z)(1-z)=1-z-z+z^2=10(1-2x+z^2)+20z=10-20z+10z^2+20z=10-10z^2=10(1-z)^2

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