Question

AJUDA AE PVF!!!!!!! Dada a função f(x)=2x²-6x-4 calcule f(-1)

Answer 1

Oie, Td Bom?!

$f(x) = 2x {}^{2} - 6x - 4$

$f( - 1) = 2 \: . \: ( - 1) {}^{2} - 6 \: . \: ( - 1) - 4$

$f( - 1) = 2 \: . \: 1 + 6 - 4$

$f( - 1) = 2 + 6 - 4$

$f( - 1) = 8 - 4$

$f( - 1) = 4$

Att. Makaveli1996