Question

Помагите пж оешить $x^{2} -12x geq 2x-12- x^{2}$

Answer 1

$x^{2} -12x geq 2x-12- x^{2} \ x^2-12x-2x+12+x^2=0 \ 2x^2-14x+12=0 \ x^2-7x+6=0 \ x^2-x-6x+6 = 0 \ x(x-1)-6(x+1)=0 \ (x-6)(x-1) = 0 \ x-6 = 0 \ x-1=0 \ x_1=6 \ x_2= 1$