Question

B^2 - 4ac, para a=6, b=-3 e c=2 VN= -31

Answer 1

${b}^{2} - 4.a.c$

$( - 3)^{2} - 4.6.2$

$9 - 48 = - 39$

Answer 2

Oie, Td Bom?!

$= b {}^{2} - 4ac$

$= ( - 3) {}^{2} - 4 \: . \: 6 \: . \: 2$

$= 9 - 4 \: . \: 6 \: . \: 2$

$= 9 - 48$

$= - 39$

Att. Makaveli1996