Задание 1:
1) y = 3x – 2
D = х∈R
2) у=1х
D = x∈R
3) у = х2 - 9
4) у=1x2+2х
2 Задание :
1) x≠2
x-2=2
x = 2+2
x=4
2) x≠6
x-4 = 2(x-6)
x-4 = 2x-12
x = 8
3) x≠19
x≠3
3(x-3) = 19(x-19)
3x-9 = 19x-361
-16x =-352
x = 22
Задание 1:
1) y = 3x – 2
D = х∈R
2) у=1х
D = x∈R
3) у = х2 - 9
D = x∈R
4) у=1x2+2х
D = x∈R
2 Задание :
1) x≠2
x-2=2
x = 2+2
x=4
2) x≠6
x-4 = 2(x-6)
x-4 = 2x-12
x = 8
3) x≠19
x≠3
3(x-3) = 19(x-19)
3x-9 = 19x-361
-16x =-352
x = 22