Question

x(2x+1)-6=0 qual eh o delta?

Answer 1

$x(2x+1)-6=0 \\ 2x^2 + x -6 = 0 \\ \\ a = 2\\ b = 1 \\ c = -6 \\ \\ \Delta = b^2 -4 \times a \times c \\ \Delta = 1^2 -4 \times 2 \times (-6) \\ \Delta = 1 - 8 \times (-6) \\ \Delta = 1 + 48 \\ \bf{\Delta = 49} \\ \\ \\ \boxed{\boxed{\bf{ Resposta : \Delta = 49 }}}$