Question

2ײ-9×+4=0 mandem a resposta por favor pra agora

Answer 1

$2x^{2}-9x+4 = 0\\\Delta=b^{2}-4ac\\\Delta = (-9)^{2}-4*2*4\\\Delta = 81-32\\\Delta = 49\\\\x = \frac{-b\pm\sqrt{\Delta}}{2a}\\ \\x = \frac{-(-9)\pm\sqrt{49}}{2*2}\\ \\x = \frac{9\pm7}{4}\\ \\x'=\frac{9+7}{4}=\frac{16}{4} = 4\\ \\ x" = \frac{9-7}{4} = \frac{2}{4} = \frac{1}{2}$

x = 4 e x = 1/2

Boa noite =)

$\frak{Scorpionatico}$