Question

1) x2 - 4x- 0:ALERGI​

Answer 1

Ответ:  x1=0;  x2=4.

Объяснение:

x² - 4x = 0:

x(x-4)=0;

x1=0;

x-4=0;

x2=4.

Answer 2

It seems like you've provided an algebraic expression $x^2 - 4x - 0$ and followed it with ":ALERGI". However, ":ALERGI" doesn't seem to be a standard mathematical notation or operation. If you have a specific question or if there's something else you'd like to know about this expression, please provide more context or clarify your request. I'm here to help!