Question

Sendo x= -b + √ b²-4ac
              ------------------
                  2a

 

calcule o valor de x para a=1 , b=5 , c=6 .

 

Preciso disso pra hoje por favor ! 

Answer 1

$<var>x=\frac{-b+\sqrt{b^{2}-4ac}}{2a}\\ \\ x=\frac{-5+\sqrt{(-5)^{2}-4.1.6}}{2.1}\\ \\ x=\frac{-5+\sqrt{1}}{2}}\\ \\ x=\frac{-4}{2}\\ \\ x=-2</var>$

Answer 2

 

 

X= [-5 +V(5^2-4.1.6)]/2.1

 

X= [-5+V(25-24)]/2

 

X=(-5+1)/2

 

X= -4/2

 

X= -2