3m+35n+24m-8n=27m+27n=27(m+n)
Подставим m+n=4
27*4=108
Sin(П-а)/tg(П+а)* ctg(П/2-а)/tg(П/2+а)* cos(2П-а)/sina=sina/(-tga)*tga/(-ctga)*cosa=sina*sina/cosa*cosa=sin^2a
A и B - независимые события, поэтому
![P(A\overline B)=P(A)P(\overline B)=P(A)(1-P(B))={1\over2}{2\over3}={1\over3}](https://tex.z-dn.net/?f=P%28A%5Coverline+B%29%3DP%28A%29P%28%5Coverline+B%29%3DP%28A%29%281-P%28B%29%29%3D%7B1%5Cover2%7D%7B2%5Cover3%7D%3D%7B1%5Cover3%7D)
(а+3)(а-7)=а^2 - 7a +3a - 21 = а^2 - 4a - 21
(x-5)(x^2 +4)=x^3 + 4x - 5x^2 - 20
(3a^2-8) ( a^2-3a+1)=3a^4 + 24a -8 -9a^3 + 3a^2
5x(x-4)(x+6) = 5x(x^2 + 2x - 24)= 5x^3 + 10x^2 - 120x
(x+1)(3x^2 - 4x +10)= 3x^3- 4x^2 +10x +3x^2 - 4x+10