Lincrafting Y = x^2 + 8
x = R

y = 4 / 4x+1
x = R {-0,25}

y = 10x / (x-1)(x+2)
x = R {2; -1}

y = \/ x^2 - 169
x > 13

y = \/ x^2 - 3x - 4 / 16 - x^2
x > 4

y = 2x / x^2 + 1
x = R

y = 2x + 1 / x(x + 1)
x = R {0}

y = \/ x - 3
x > 3

y = x^2 - 4x - 3 / x^2 - 5x + 4
x = R {1; 2,5}

y = logx(x^2 - 64)
Не проходил еще

Вариант 2

y = 4x - 1 / 5
x = R

y = 4 - 5x / 4(x + 1)^2
x = R {-1}

y = x / (x + 12)(6x + 3)
x = R {(-12 +- \/ 118) / 4}

y = \/ x^2 - 144 / 1 - 4x^2
x = R {12; -12; 0,5}

y = 10 / 3 + x
x = R {-3}

y = x^3 - 1 
x = R

y = \/ 2x + 4
x > - 2

y = 2 - x / x^2 + 9
x = R

y = logx-1(x^2 + 4)
Не проходил еще