Question

Dada a função f : R → R por f(x) = x² + x, determine o valor de f(2) + f(5) – f(1). *
10
34
16
-34

Answer 1

$f(2)=2^2+2=6\\f(5)=5^2+5=30\\f(1)=1^2+1=2\\\\f(2)+f(5)-f(1)=6+30-2=34$