Question

Calcule o valor de ∆
∆=(-2)²-4.3.(-1)

Answer 1

∆=(-2)² -4.3.(-1)

∆= 4 + 12

∆= 16

Answer 2

Resposta:

$( - 2) {}^{2} - 4 \times 3 \times ( - 1) \\ 4 - 4 \times 3 \times ( - 1) \\ 4 - 12 \times( - 1) \\ 4 - ( -12)\\ 4 + 12 \\ 16$