Comments by "Fhf Fhf" (@fhffhff) on "Dameoz" channel.

  1. -5(0,5+8cos⁴20°-8cos²20°+2,5cos 20°)/(0,125-cos²20°-0,5cos20°)-9= -1(?)
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  2. {5±√24;3;1/3}
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  3. √(15^2+24²-15*24)=21 R=7√3 x=√(14√3)²-15²)=11√3
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  4. x=1,x³-9x²+26x-24=0 ((x-3)²-1)(x-3) =0[x=3,x=2,X=4;{1;2;3;4}
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  5. 13xy45z:728=2³*7*13, 45z:8,2+z:8,z=6, 13*10^5+xy*10³+456:7,3+xy*6+4=6xy:7, xy:7,13*10⁵+xy*10³+456:13,(12xy+1):13, xy≥0,≤973:13=74(ост.9),Ху=0,1:/13,х=7, 84у+1:13,6у+1:13,у=2, 1372458,1327458, х≤9,1 х, а значит и у.
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  6. x=±100'000,5-1,5{99'999;-100'002}
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  7. R²+3R-2=0 R=(-3+√17)/2 S=R²(1+cosa)(1+sina)=(13-3√17)/2(5+√17)(7+√17)/36=8/9
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  8. 2a+1=3a-5 a=6 6&2=4✓
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  9. а=3/4√15,b=11/4+5 1/4=8{6√15}
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  10. (5m)^5m=3125^5⁵ 5m=3125{625}
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