ПОЖАЛУЙСТААА!!! решитееее,помогитеее. Created by Lalaalalal. algebra-ru

ПОЖАЛУЙСТААА!!! решитееее,помогитеее...

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ПОЖАЛУЙСТААА!!! решитееее,помогитеее

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Elisaww 1. а) $15x^{3}$
б) $162a^{4}b^{4}$
2. а) 4ax-24a
б) -20ax-25x
в) 15ab-6b²-21b
г) 6b³-4b²-8b
д) -9y³+9y²-27y

1.4n(n-1)-3n(2n+4)+2n(n-2)=4n²-4n-6n²-12n+2n²-4n=-4n-12n-4n=-20n
n=-0,4
-20*(-0.4)=8

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