Respuestas
Respuesta dada por:
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Hola !!
3x²+12x=0
3x²+12x+0=0
↓ ↓ ↓
a b c
Como no se puede factorizar utilizamos formula:
![x_{1,2} = \frac{-b +/- \sqrt{ b^{2}-4ac } }{2a} x_{1,2} = \frac{-b +/- \sqrt{ b^{2}-4ac } }{2a}](https://tex.z-dn.net/?f=+x_%7B1%2C2%7D+%3D+%5Cfrac%7B-b+%2B%2F-++%5Csqrt%7B+b%5E%7B2%7D-4ac+%7D+%7D%7B2a%7D+)
![x_{1,2} = \frac{-(12)+/- \sqrt{12^{2}-4(3)(0) } }{2(3)} x_{1,2} = \frac{-(12)+/- \sqrt{12^{2}-4(3)(0) } }{2(3)}](https://tex.z-dn.net/?f=+x_%7B1%2C2%7D+%3D++%5Cfrac%7B-%2812%29%2B%2F-+%5Csqrt%7B12%5E%7B2%7D-4%283%29%280%29+%7D+%7D%7B2%283%29%7D+)
![x_{1,2} = \frac{-12+/- \sqrt{144} }{6} x_{1,2} = \frac{-12+/- \sqrt{144} }{6}](https://tex.z-dn.net/?f=+x_%7B1%2C2%7D+%3D+%5Cfrac%7B-12%2B%2F-+%5Csqrt%7B144%7D+%7D%7B6%7D+)
Primera solución :
![x_{1} = \frac{-12+12}{6} x_{1} = \frac{-12+12}{6}](https://tex.z-dn.net/?f=+x_%7B1%7D+%3D+%5Cfrac%7B-12%2B12%7D%7B6%7D+)
![x_{1} =0 x_{1} =0](https://tex.z-dn.net/?f=+x_%7B1%7D+%3D0)
Segunda solución :
![x_{2} = \frac{-12-12}{6} x_{2} = \frac{-12-12}{6}](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D+%5Cfrac%7B-12-12%7D%7B6%7D+)
![x_{2} = \frac{-24}{6} x_{2} = \frac{-24}{6}](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D+%5Cfrac%7B-24%7D%7B6%7D+)
![x_{2} =-4 x_{2} =-4](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D-4)
Respuesta: x₁=0 ∧ x₂=-4
b)8x²-32=0
8x²+0x-32=0
↓ ↓ ↓
a b c
Utilizamos formula:
![x_{1,2} = \frac{-b +/- \sqrt{ b^{2}-4ac } }{2a} x_{1,2} = \frac{-b +/- \sqrt{ b^{2}-4ac } }{2a}](https://tex.z-dn.net/?f=+x_%7B1%2C2%7D+%3D+%5Cfrac%7B-b+%2B%2F-+%5Csqrt%7B+b%5E%7B2%7D-4ac+%7D+%7D%7B2a%7D+)
![x_{1,2} = \frac{-(0+/- \sqrt{0^{2}-4(8)(-32) } }{2(8)} x_{1,2} = \frac{-(0+/- \sqrt{0^{2}-4(8)(-32) } }{2(8)}](https://tex.z-dn.net/?f=+x_%7B1%2C2%7D+%3D+%5Cfrac%7B-%280%2B%2F-+%5Csqrt%7B0%5E%7B2%7D-4%288%29%28-32%29+%7D+%7D%7B2%288%29%7D+)
![x_{1,2} = \frac{0+/- \sqrt{1024} }{16} x_{1,2} = \frac{0+/- \sqrt{1024} }{16}](https://tex.z-dn.net/?f=+x_%7B1%2C2%7D+%3D+%5Cfrac%7B0%2B%2F-+%5Csqrt%7B1024%7D+%7D%7B16%7D+)
Primera solución :
![x_{1} = \frac{32}{16} x_{1} = \frac{32}{16}](https://tex.z-dn.net/?f=+x_%7B1%7D+%3D+%5Cfrac%7B32%7D%7B16%7D+)
![x_{1} =2 x_{1} =2](https://tex.z-dn.net/?f=+x_%7B1%7D+%3D2)
Segunda solución :
![x_{2} = \frac{0-32}{16} x_{2} = \frac{0-32}{16}](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D+%5Cfrac%7B0-32%7D%7B16%7D+)
![x_{2} = \frac{-32}{16} x_{2} = \frac{-32}{16}](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D+%5Cfrac%7B-32%7D%7B16%7D+)
![x_{2} =-2 x_{2} =-2](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D-2)
Respuesta: x₁=2 ∧ x₂=-2
Suerte y saludos !!
3x²+12x=0
3x²+12x+0=0
↓ ↓ ↓
a b c
Como no se puede factorizar utilizamos formula:
Primera solución :
Segunda solución :
Respuesta: x₁=0 ∧ x₂=-4
b)8x²-32=0
8x²+0x-32=0
↓ ↓ ↓
a b c
Utilizamos formula:
Primera solución :
Segunda solución :
Respuesta: x₁=2 ∧ x₂=-2
Suerte y saludos !!
MikuYagami:
Hola!! y muchas Gracias! :D la verdad me has ayudado bastante!
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