Question

2- Dada a função f (x) = -x2 + 5x + 6, qual o valor de f(-1)? - - X a) 0 b) 5 c) 4 d) 3 e) 1 O a) Ob) e)​

Answer 1

Resposta:

A

Explicação passo a passo:

-(-1)^2 + 5 (-1) + 6

-(1) -5 + 6

-1 -5 + 6

-6 +6 = 0

Answer 2

$\Large\boxed{\begin{array}{l}\sf f(x)=-x^2+5x+6\\\sf f(-1)=-(-1)^2+5\cdot(-1)+6\\\sf f(-1)=-(1)+5\cdot(-1)+6\\\sf f(-1)=-1-5+6\\\sf f(-1)=-\backslash\!\!\!6+\backslash\!\!\!6\\\sf f (-1)=0\\\huge\boxed{\boxed{\boxed{\boxed{\sf\red{\maltese}~\blue{alternativa~a}}}}}\end{array}}$