(25/36a^6-a^3b^3+36/25b^6)(5/6a^3+6/5b^3)=125a^9/216+216b^9/125
<span>x²y + xy² -2x -2y=ху(х+у)-2(х+у)=(ху-2)(х+у)</span>
5x+(11-7x)=5x+11-7x=-2x+11
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Алма = 10
Жузим = 4
Кияр = 2
Кияр + алма + жузим = 2 + 10 + 4 = 16
4a-11<a+13
4a-a<13+11
3a<24
a<24/3
a<8