Question

Qual resultado dessa equação de 2° Grau

x²-6x+5=0

Answer 1

x²-6x+5=0
x²-11X=0
x²=11X+0
x=11/2
x=5,5

Answer 2

Olá, tudo bem?
Para esse cálculo devemos usar a fórmula de Bhaskara:

$x^2-6x+5=0\\ (a=1,b=-6,c=5)\\\\\\ \Delta=b^2-4\cdot a\cdot c\\ \Delta=(-6)^2-4\cdot1\cdot5\\ \Delta=36-20\\ \boxed{\Delta=16}\\\\\\ x= \frac{-b\±\sqrt{\Delta}}{2\cdot a}\\\\ x= \frac{-(-6)\±\sqrt{16}}{2\cdot1}\\\\ x= \frac{6\±4}{2}\\\\ x_1= \frac{6+4}{2}=\frac{10}{2}=\ \textgreater \ \boxed{x_1=5 }\\\\\\ x_2=\frac{6-4}{2}=\frac{2}{2}=\ \textgreater \ \boxed{x_2=1 }\\\\\\ \boxed{\boxed{S=\left\{5,1\}}}$