Question

3x^2 -6x + 9 qual eh o delta ?

Answer 1

Olá

$3x^2-6x+9 \\ \\ \\ a=3~~~~~ ~~~~ ~b=-6~~~~~ ~~~~ ~c=9 \\ \\ \\ \Delta=b^2-4\cdot a\cdot c \\ \\ \Delta = (-6)^2-4\cdot (3)\cdot(9) \\ \\ \Delta=36 -108 \\ \\ \\ \boxed{\Delta = -72}~~~~~~ ~~~~~ ~~~\longleftarrow \text{Resposta}$