Question

X2+2x-3=0 valor do discriminante

Answer 1

$x {}^{2} + 2x - 3 = 0 \\ a = 1 \: \: \: b = 2 \: \: \: c = - 3$

$Δ=b {}^{2} -4ac \\ Δ= \: 2 {}^{2} - 4 \times 1( - 3) \\ Δ=4 - ( - 12) \\ Δ=16$