1) x+3√x-18=0 2) (x+1)^4-2(x+1)^2-3=0
Ответ: x=36
1) x+3√x-18=0
3√x-18= - x
9(x-18)=x^2
9x-162=x^2
9x-162-x^2=0
-x^2+9x-162=0
x= -(-9)± \ 2*1
x1=
x2=
x1= =6
x2==-3
=∉