Matematika kanali
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MISOL YECHIM:
x³-y³-2y²-3y-1+x²-2xy
x-y=1 → ya'ni 71.8-70.8=1
(x-y)(x²+xy+y²
+x²-2xy+y²-3y²-3y-1=
x²+xy+y²+(x-y)²-3y²-3y-1=
x²+y²+xy+1-3y²-3y-1=
(x-y)²+3xy-3y²-3y=
1+3y(x-y)-3y=
1+3y-3y=1
Muallif: Islom sheyx😁
👉@RGN_MATH
