1)sin x = 0 2)cos x = -0, 4827 3)tg x = 0 4)tg x= -0, 5 5)cos x = 0 6)sin 2x= -1 7)sin x = 0, 2753 8)tg x = -0, 6009 9)2 cos 3x - 1 =0

1)sinx=0                               

x=πn

3)tgx=0

x=π

4)tg x= -0,5

x=-arctg0.5+πn

5)cos x = 0

x=π/2+πn

6)sin 2x= -1

2x=-π\2+2πn

x=-π/4+πn

9)2 cos 3x - 1

3x=π/3+2πn

x=π/9+2πn/3

 

 

 

в остальных я не знаю, первоначальные дроби надо было написать).

 

1. а)4(1+3х)^2-24х = 4(1^2+2*1*3х+(3х)^2)-24х = 4(1+6х+(3х)^2)-24х = 4(1+6х+9х^2)-24х = 4+24х+36х^2-24х = 4+0+36х^2 = 4+36х^2 = 36х^2+4 б)3у(2х-5)-2х(у+1) = 3у*2х-3у*5-2х*(у+1) = 6ху-15у-2х*(у+1) = 6ху-15у-2ху-2х = 4ху-15у-2х = 4ху-2х-15у 2. а) (х^2-25)\(х^2-8х+15) = (х+5)(х-5)\х^2-8х+15 = (х+5)(х-5)\х^2-3х-5х+15 = (х+5)(х-5)\х(х-3)-5х+15 = (х+5)(х-5)\х(х-3)-5(х-3) = (х+5)(х-5)\(х-5)(х-3) = х+5\х-3 б) (n^2+2n+1)/(n^2+5n+4) = (n+1)^2/n^2+5n+4 = (n+1)^2/n^2+4n+n+4 = (n+1)^2/n(n+4)+n+4 = (n+1)^2/n(n+4)+1(n+4) = (n+1)^2/(n+1)(n+4) = (n+2)^2-1/n+4 = (n+1)^1/n+4 = n+1/n+4 в)(х^3-1)/(2х^2+х-3) = (х-1)(х^2+х+1^2)/2х^2+х-3 = (х-1)(х^2+х+1)/2х^2+3х-2х-3 = (х-1)(х^2+х+1)/х(2х+3)-1(2х+3) = (х-1)(х^2+ъ+1)/(х-1)(2х+3) = х^2+х+1/2х+3 3. 5х^2-2х=0 { х=0. {х=0. {х=0 5х-2=0. 5х=2. х= 2/5

https://tex.z-dn.net/?f=2%7B%2C%7D(17)%3D2%2B0%7B%2C%7D(17)%3D2%2B0%7B%2C%7D17%2B0%7B%2C%7D0017%2B0%7B%2C%7D000017%2B...

https://tex.z-dn.net/?f=0%7B%2C%7D17%2B0%7B%2C%7D0017%2B0%7B%2C%7D000017%2B...                                      - сума нескінченно спадної геометричної прогресії перший член якого дорівнює , а знаменник  

https://tex.z-dn.net/?f=2%7B%2C%7D(17)%3D2%2B%5Cdfrac%7Bb_1%7D%7B1-q%7D%3D2%2B%5Cdfrac%7B0%7B%2C%7D17%7D%7B1-0%7B%2C%7D01%7D%3D2%2B%5Cdfrac%7B17%7D%7B99%7D%3D2%5Cdfrac%7B17%7D%7B99%7D

Объяснение:

думаю что и поставте лайк