Question

x² + 5x+2=0 ecuaciones​

Answer 1

Respuesta:

x² + 5x+2=0

resultado

$x=\frac{-5+\sqrt{17}}{2},\:x=\frac{-5-\sqrt{17}}{2}$

pasos

$x_{1,\:2}=\frac{-5\pm \sqrt{5^2-4\cdot \:1\cdot \:2}}{2\cdot \:1}\\\\\\x_1=\frac{-5+\sqrt{17}}{2\cdot \:1},\:x_2=\frac{-5-\sqrt{17}}{2\cdot \:1}$

Answer 2

Respuesta:

a=1   b=5   c=2

x = (-b±√(b^2-4ac))/2a

x = (-5±√(5^2-4(1)(2)))/2(1)

x = (-5±√(25-8))/2

x = (-5±√(17))/2

x = (-5±(4))/2

1. x1 = (-5+4)/2 = -1/2 = -0.5

2. x2 = (-5-4)/2 = 9/2 = 4.5

Explicación paso a paso: