Question

delta de x2 + 5x - 7 = 0 ?

Answer 1

Oie, Td Bom?!

$x {}^{2} + 5x - 7 = 0$

• Coef.: $a = 1 \: </strong><strong>,</strong><strong> \: b = 5 \: </strong><strong>,</strong><strong> \: c = - 7$

$\Delta = b {}^{2} - 4ac \\ \Delta = 5 {}^{2} - 4 \: . \: 2 \: . \: ( - 7) \\ \Delta = 25 + 28 \\ \Delta = 53$

Att. Makaveli1996