Dado lo siguiente: p(x)=(2x^4+ 7x^3+3x+8); q(x)=(4x^5+ 2x^2-5) determine los coeficiente y el grado del polinomio p(x)*q(x)
Respuestas
Respuesta dada por:
2
Debes multiplicar primero
![4x^{5} (2 x^{4} + 7 x^{3} + 3x + 8) = 8 x^{9} +28 x^{8} +12 x^{6} +32x^{5} 4x^{5} (2 x^{4} + 7 x^{3} + 3x + 8) = 8 x^{9} +28 x^{8} +12 x^{6} +32x^{5}](https://tex.z-dn.net/?f=4x%5E%7B5%7D+%282+x%5E%7B4%7D+%2B+7+x%5E%7B3%7D+%2B+3x+%2B+8%29+%3D+8+x%5E%7B9%7D+%2B28+x%5E%7B8%7D+%2B12+x%5E%7B6%7D+%2B32x%5E%7B5%7D+)
Después multiplicar
![2 x^{2} (2x^{4} + 7 x^{3} + 3x + 8) =4 x^{6} +14 x^{5} +6 x^{3}+16 x^{2} 2 x^{2} (2x^{4} + 7 x^{3} + 3x + 8) =4 x^{6} +14 x^{5} +6 x^{3}+16 x^{2}](https://tex.z-dn.net/?f=2+x%5E%7B2%7D++%282x%5E%7B4%7D+%2B+7+x%5E%7B3%7D+%2B+3x+%2B+8%29+%3D4+x%5E%7B6%7D+%2B14+x%5E%7B5%7D+%2B6+x%5E%7B3%7D%2B16+x%5E%7B2%7D)
Y por último
![-5 (2 x^{4} + 7 x^{3} + 3x + 8) =- 10 x^{4} -35 x^{3} -15x -40 -5 (2 x^{4} + 7 x^{3} + 3x + 8) =- 10 x^{4} -35 x^{3} -15x -40](https://tex.z-dn.net/?f=-5+%282+x%5E%7B4%7D+%2B+7+x%5E%7B3%7D+%2B+3x+%2B+8%29+%3D-+10+x%5E%7B4%7D+-35+x%5E%7B3%7D+-15x+-40)
y sumar los tres resultados.
![8 x^{9}+28 x^{8}+(12+4) x^{6}+(32+14) x^{5}-10 x^{4}+(6-35) x^{3}+16 x^{2} 8 x^{9}+28 x^{8}+(12+4) x^{6}+(32+14) x^{5}-10 x^{4}+(6-35) x^{3}+16 x^{2}](https://tex.z-dn.net/?f=8+x%5E%7B9%7D%2B28+x%5E%7B8%7D%2B%2812%2B4%29+x%5E%7B6%7D%2B%2832%2B14%29+x%5E%7B5%7D-10+x%5E%7B4%7D%2B%286-35%29+x%5E%7B3%7D%2B16+x%5E%7B2%7D++)
![-15x-40 -15x-40](https://tex.z-dn.net/?f=-15x-40)
![8 x^{9} +28 x^{8} +16 x^{6} +46 x^{5}- 10 x^{4}+29x^{3}+16 x^{2} - 15x - 40 8 x^{9} +28 x^{8} +16 x^{6} +46 x^{5}- 10 x^{4}+29x^{3}+16 x^{2} - 15x - 40](https://tex.z-dn.net/?f=8+x%5E%7B9%7D+%2B28+x%5E%7B8%7D+%2B16+x%5E%7B6%7D+%2B46+x%5E%7B5%7D-+10+x%5E%7B4%7D%2B29x%5E%7B3%7D%2B16+x%5E%7B2%7D+-+15x+-+40++++)
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![2x^{4} + 7 x^{3} + 3x + 8 2x^{4} + 7 x^{3} + 3x + 8](https://tex.z-dn.net/?f=2x%5E%7B4%7D+%2B+7+x%5E%7B3%7D+%2B+3x+%2B+8)
![4 x^{5} +2 x^{2} -5 4 x^{5} +2 x^{2} -5](https://tex.z-dn.net/?f=4+x%5E%7B5%7D+%2B2+x%5E%7B2%7D+-5)
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![8 x^{9} +28 x^{8} +12 x^{6} +32x^{5} 8 x^{9} +28 x^{8} +12 x^{6} +32x^{5}](https://tex.z-dn.net/?f=8+x%5E%7B9%7D+%2B28+x%5E%7B8%7D+%2B12+x%5E%7B6%7D+%2B32x%5E%7B5%7D+)
![4x^{6} +14 x^{5} +6 x^{3}+16 x^{2} 4x^{6} +14 x^{5} +6 x^{3}+16 x^{2}](https://tex.z-dn.net/?f=+4x%5E%7B6%7D+%2B14+x%5E%7B5%7D+%2B6+x%5E%7B3%7D%2B16+x%5E%7B2%7D)
![- 10 x^{4} -35 x^{3} -15x -40 - 10 x^{4} -35 x^{3} -15x -40](https://tex.z-dn.net/?f=-+10+x%5E%7B4%7D+-35+x%5E%7B3%7D+-15x+-40)
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![8 x^{9} +28 x^{8} +16 x^{6} +46 x^{5}- 10 x^{4}+29x^{3}+16 x^{2} - 15x - 40 8 x^{9} +28 x^{8} +16 x^{6} +46 x^{5}- 10 x^{4}+29x^{3}+16 x^{2} - 15x - 40](https://tex.z-dn.net/?f=8+x%5E%7B9%7D+%2B28+x%5E%7B8%7D+%2B16+x%5E%7B6%7D+%2B46+x%5E%7B5%7D-+10+x%5E%7B4%7D%2B29x%5E%7B3%7D%2B16+x%5E%7B2%7D+-+15x+-+40)
Después multiplicar
Y por último
y sumar los tres resultados.
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ale1526vasa:
muchas gracias te pasaste :)
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