[tex]7x^5-6x^4+x^3-5x^5+8x^4+3x^3-x^5+7x^4[/tex]
Agrupamos los términos semejantes
[tex]=7x^5-5x^5-x^5-6x^4+8x^4+7x^4+x^3+3x^3[/tex]
Luego los empezamos a sumar o restar dependiendo
[tex]x^3+3x^3=4x^3[/tex]
[tex]=7x^5-5x^5-x^5-6x^4+8x^4+7x^4+4x^3[/tex]
[tex]-6x^4+8x^4+7x^4=9x^4[/tex]
[tex]=7x^5-5x^5-x^5+9x^4+4x^3[/tex]
[tex]7x^5-5x^5-x^5=x^5[/tex]
[tex]\boxed{R(x)=x^5+9x^4+4x^3}[/tex]
[tex]Buena\:suerte\:con\:tus\:tareas\::ProfeAndresFelipe :)[/tex]
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Verified answer
RESOLVER:
[tex]7x^5-6x^4+x^3-5x^5+8x^4+3x^3-x^5+7x^4[/tex]
Agrupamos los términos semejantes
[tex]=7x^5-5x^5-x^5-6x^4+8x^4+7x^4+x^3+3x^3[/tex]
Luego los empezamos a sumar o restar dependiendo
[tex]x^3+3x^3=4x^3[/tex]
[tex]=7x^5-5x^5-x^5-6x^4+8x^4+7x^4+4x^3[/tex]
[tex]-6x^4+8x^4+7x^4=9x^4[/tex]
[tex]=7x^5-5x^5-x^5+9x^4+4x^3[/tex]
[tex]7x^5-5x^5-x^5=x^5[/tex]
[tex]\boxed{R(x)=x^5+9x^4+4x^3}[/tex]
[tex]Buena\:suerte\:con\:tus\:tareas\::ProfeAndresFelipe :)[/tex]