1) x(x-14)(6+x)<span>≥0 (см рис)
2) 2 и 4</span>
31c^2/(c+12)*(c-12)
31c^2/c^2-19c+12c-228
31c^2/c2-7c-228
99d^2-53/(3d-4)*(5d+45)
99d^2-53/15d^2+135d-20d-180
99d^2-53/15d^2+115d-180
Y(x)=x*√x=x^1*x^(1/2)=x^(1+1/2)=x^(3/2)
y`(x)=3/2*x^(3/2-1)=3/2*x^(1/2)=(3√x)/2