Pi--->180 gr
5*180/18=50 gr
180/5=36 gr
А≥5b
b≥2c
3a≥30с
то
5b≥30c
3a≥5b
a≥2c
54x²-2x^5=2x²(27-x³)=2x²(3-x)(x²+3x+9)
5678, 5687,5768,5786,5876,5867,6578,6587,6758,6785,6875,6857,7865,7856,
7658,7685,7568,7586,8765,8756,8657,8675.,8576,8567.
(27-8а)³=19683-17496а+5184а²-512а³
8х³+у³=(2х+у)(4х²-2ху+у²)
27а³-8b³=(3-2а)(9+6а+4а)
(1+64у)³=1+192у+12288у²+262144у³