Question

X²-5x+6=0 achar a raiz dessa equação de 2 grau

Answer 1

Resposta:

Explicação passo a passo:

x² - 5x + 6 = 0

a = 1

b = -5

c = 6

Bhaskara

$\Delta =b^2-4.a.c\\\Delta =(-5)^2-4*1*6\\\Delta = 25-24\\\Delta =1$

Raízes

$x'=\frac{-b+\sqrt{\Delta} }{2a} \\\\x'=\frac{-(-5)+\sqrt{1} }{2*1} \\\\x'=\frac{5+1 }{2} \\\\x'=\frac{6}{2}\\\\x' = 3\\\\\\x''=\frac{-b-\sqrt{\Delta} }{2a} \\\\x''=\frac{-(-5)-\sqrt{1} }{2*1} \\\\x''=\frac{5-1 }{2} \\\\x''=\frac{4 }{2} \\\\x''= 2$