Question

considerando a funçao f(x) = x- 5x elevado a potencia de 2 + 6, com x pertence a R, y pertence a R, determine; f(-4), f(3), f(2/5), f(raiz de 2)

Answer 1

F(-4)= -4-5(-4) ao quadrado + 6 F(-4) = -4-5×16+6 F(-4)= -4-80+6 F(-4)= -78 F(3)=3-5×3 ao quadrado +6 F(3)=3-5×9+6 F(3)=3-45+6 F(3)=-36