Question

помогите пожалуйста! !!

Answer 1

$( sqrt{5x+5})^2= (sqrt{5+2x+x^2})^2 \ 5x+5=5+2x+x^2 \ x^2-3x=0 \ x(x-3)=0 \ \ x_1=0; x_2=3$

$y= sqrt{( frac{1}{3})^{x+2} - frac{1}{27} } \ \( frac{1}{3})^{x+2} - frac{1}{27} geq 0 \ \ ( frac{1}{3} )^{x+2} geq ( frac{1}{3}) ^3 \ x+2 leq 3 \ x leq 1 \ \ xin (-infty;1]$