формулы приведения...
...= sin4x+sin 12x / cos8x+1
Замена y=tgx
y²-3y+2=0
y₁=1;
y₂=2;
tgx=1
x=π/4+πk,k∈Z;
tg=2;
x=arctg2+πk,k∈Z
3x-2(x-5)<=-6
3x-2x+10<=-6
x<=-6-10
x<=-16
1. 6ab⁵ = -7
1) 3*6ab⁵ = 18ab⁵ = 3*(-7) = -21
2) (6ab⁵)² = 36a²b¹⁰ = (-7)² = 49; 36a²b¹⁰:6 = 6a²b¹⁰ = 49÷6 = ![\displaystyle \frac{48+1}6 =\bold{8\frac16 }](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7B48%2B1%7D6%20%3D%5Cbold%7B8%5Cfrac16%20%7D%20)
2.
![\displaystyle 128x^2y^3\cdot (\frac{-1}4 xy^3)^3=128x^2y^3\cdot (\frac{-1}{4^3} x^3y^9)=\frac{-2\cdot 64}{64} x^{2+3} y^{3+9} =\bold{-2x^5y^{12}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20128x%5E2y%5E3%5Ccdot%20%28%5Cfrac%7B-1%7D4%20xy%5E3%29%5E3%3D128x%5E2y%5E3%5Ccdot%20%28%5Cfrac%7B-1%7D%7B4%5E3%7D%20x%5E3y%5E9%29%3D%5Cfrac%7B-2%5Ccdot%2064%7D%7B64%7D%20x%5E%7B2%2B3%7D%20y%5E%7B3%2B9%7D%20%3D%5Cbold%7B-2x%5E5y%5E%7B12%7D%7D%20)