Question

решите неравенстово

а) (x–6)(x + 2)2 0;

Answer 1

x^3+3x^2-2x-6=03(x^2-2)+x(x^2-2)=0(x+3)(x^2-2)=01)(x+3)=0x=-32) x^2-2=0x^2 = 2