Question

Resolva: 5x = 6 - x²

Answer 1

x² + 5x - 6 = 0

b² - 4ac
5² - 4.1.6 = 1

-b+- raiz de 1/ 2a
-1+- 1 / 2

x1= -1+1/2 = 0
x2 = -1 -1/2= -1 

Answer 2

x^2 + 5x - 6 = 0

Δ=b²-4*a*c
Δ=5²-4*(1)*(-6)
Δ=25-4*(-6)
Δ=25-(-24)
Δ=49

x = -b±√(Δ)/2*a
x' = (-5)+√(49)/2*(1)
x' = (-5)+(7)/(2)
x' = 2/2
x' = 1

x'' = -b±√(Δ)/2*a
x'' = (-5)-√(49)/2*(1)
x'' = (-5)-(7)/(2)
x'' = -12/2
x'' = -6