Математике 27у^3 +1 ———— черта дроби 1- 9 у^2...

LOOOLmaincraft @LOOOLmaincraft

August 2022 1 4 Report

Математике
27у^3 +1
———— черта дроби
1- 9 у^2

Answers & Comments

CVita $\frac{27y^3+1}{1-9y^2}= \frac{(3y)^3+1^3}{1^2-(3y)^2}= \frac{(3y+1)(9y^2-3y+1)}{(1-3y)(1+3y)}= \frac{9y^2-3y+1}{1-3y}$

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