Question

Помогите решить х(х + 10) = 10х - 5х^2

Answer 1

$displaystyle tt x(x+10)=10x-5x^2\displaystyle tt x^2+10x=10x-5x^2\displaystyle tt x^2+5x^2+10x-10x=0\displaystyle tt x^2+5x^2=0\displaystyle tt x^2(1+5)=0\displaystyle tt 6x^2=0\displaystyle tt bold{x=0}$