Question

ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!

Answer 1

$f(x)=\dfrac{1}{12}x^{2} +2x\\\\\\f(6)=\dfrac{1}{12} \cdot6^{2} +2\cdot6=3+12=15\\\\\\\boxed{f(6)=15}\\\\\\f(-1)=\dfrac{1}{12}\cdot\Big(-1\Big)^{2} +2\cdot(-1)=\dfrac{1}{12} -2=-1\dfrac{11}{12}\\\\\\\boxed{f(-1)=-1\dfrac{11}{12}}$