!!!!!!!!!!!!!!!!!!!!!!!!!
27x^3-y^3+9x^2*y-3xy^2=(3x-y)(9x^2 +3xy+y^2)+3xy(3x-y)
√5,88 * 1/√12 = √(5,88 / 12) = √(588/1200) = √(49/100) = 7/10 = 0,7
6х-10х ≤<span> -8-8</span>