Respuestas
Respuesta:
Espero entiendas
Explicación paso a paso:
A)
x^3-x^2-2x+2y-2x^3-3x^2+x-1
Pasos:
x^3-x^2-2x+2y-2x^3-3x^2+x-1
=x^3-2x^3-x^2-3x^2-2x+x+2y-1
=x^3-2x^3-4x^2-2x+x+2y-1
=-x^3-4x^2-2x+x+2y-1
=-x^3-4x^2-x+2y-1
B)
2(x^3-x^2-2x+2y)+4(2x^3-3x^2+x-1)
Pasos
2(x^3-x^2-2x+2y)+4(2x^3-3x^2+x-1)
=2x^3-2x^2-4x+4y+4(2x^3-3x^2+x-1)
=2x^3-2x^2-4x+4y+8x^3-12x^2+4x-4
=2x^3+8x^3-2x^2-12x^2-4x+4x+4y-4
=2x^3+8x^3-14x^2-4x+4x+4y-4
=10x^3-14x^2-4x+4x+4y-4
=10x^3-14x^2+4y-4
C)
-(x^3-x^2-2x+2y)-3(2x^3-3x^2+x-1)
Pasos
-(x^3-x^2-2x+2y)-3(2x^3-3x^2+x-1)
=-x^3+x^2+2x-2y-3(2x^3-3x^2+x-1)
=-x^3+x^2+2x-2y-6x^3+9x^2-3x+3
=-x^3-6x^3+x^2+9x^2+2x-3x-2y+3
=-x^3-6x^3+10x^2+2x-3x-2y+3
=-7x^3+10x^2+2x-3x-2y+3
=-7x^3+10x^2-x-2y+3
2do punto
A)
2x^2(3-2x)
Pasos
2*3x^2-2*2x^2x
2*3x^2=6x^2
2*2x^2x=4x^3
=6x^2-4x^3
Pasamos la respuesta a su forma natural
=-4x^3+6x^2
B)
2x^2(4x^2+2x-3)
Pasos
=2x^2*4x^2+2x^2*2x+2x^2(-3)
=2*4x^2x^2+2*2x^2x-2*3x^2
=8x^4+4x^3-6x^2
C)
(2x-3)(x^2+2x)
Pasos
=2x*x^2+2x*2x+(-3)x^2+(-3)*2x
=2x^2x+2*2xx-3x^2-3*2x
=2x^3+x^2-6x
D)
(3x^2+2x)(x^2-2x+5)
Pasos
=3x^2x^2+3x^2(-2x)+3x^2*5+2xx^2+2x(-2x)+2x*5
=3x^2x^2-3*2x^2x+35x^2+2x^2x-2:2xx+2*5x
=3x^4-6x^3+15x^2+2x^3-4x^2+10x
=3x^4-6x^3+2x^3+15x^2-4x^2+10x
=3x^4-6x^3+2x^3+11x^2+10x
=3x^4-4x^3+11x^2+10x