Question

quais sao as raizes da equação x^2-1x-6=0?

Answer 1

Utilizando Bhaskara:

a = 1 , b = -1 , c = -6

$\Delta=b^2-4*a*c\\\\\Delta = (-1)^2-4*1*(-6)\\\\\Delta = 1+24\\\\\Delta = 25\\\\\\x=\frac{-b \pm \sqrt{\Delta}}{2a}\\ \\x=\frac{1 \pm \sqrt{25}}{2}\\\\x=\frac{1 \pm 5}{2}\\\\\\x_1=\frac{1+5}{2}= \frac{6}{2}=3\\ \\x_2=\frac{1-5}{2}= \frac{-4}{2}=-2$