Question

∆=-6 auquadrado -4.1.9​

Answer 1

∆ = - 6² - 4 . 1 . 9

∆ = - 36 - 4 . 1 . 9

∆ = - 36 - 36

∆ = - 72

Answer 2

Resposta:

$\Delta=(-6)^2-4(1)(9)\\ \\ \Delta=36-36\\ \\\boxed{ \Delta=0}$