Question

Determine o valor de delta:

g) 2x²+4x-1=0

Se puderem fizer a conta com a fórmula b²-4.a.c, agradeço!

Answer 1

$a=2\\b=4\\c=-1\\\\\Delta=b^2-4.a.c\\\Delta=4^2-4.2.(-1)\\\Delta=16-8.(-1)\\\Delta=16+8\\\Delta=24$