Seja f:R⇒R uma função que tenha as seguintes propriedades: { f(x+y)=f(x) + f(y) + xy, ∀ x, y ∈ R
{ f(4)=10

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )

the correct answer is x/3+10≥32

hope this !