Question

Encontre a soluçao da equaçao x² - 5x + 3 = 0

Answer 1

Resposta:

$x^{2} -5x+3=0\\ \\ a=1\\ b=-5\\ c=3\\ \\ \Delta=b^2-4ac\\ \Delta=(-5)^2-4(1)(3)\\ \Delta=25-12\\ \Delta=13\\ \\ x={-b\pm\sqrt{\Delta} \over2a}={5\pm\sqrt{13} \over2}\\ \\ x'={5+\sqrt{13} \over2}\\ \\ x"={5-\sqrt{13} \over2}$