Question

multiplicación y division de polinomios
1. $(5m^{2})(-m^{2} n+8)$$2.[tex](9x-y)(-7y-3xy)$
3.$(8a^{2} b)(-6a^{3} b^{2} +5a^{2} b^{3} -3)$
4.$(2mn^{2} )(-5mn^{4} -8m^{2} n^{3} +10m^{3} n^{2} )$
5.$(15x^{2}y-4x y^{3} )(-3xy)$

Answer 1

Respuesta:

A)23

B)43

C)56

D)67

E)78

Explicación paso a paso:

Answer 2

Respuesta:

Explicación paso a paso:

1. (5m²)(-m²n+8)

aplicamos la propiedad distributiva

(5m²)(-m²n+8) = (5m²)(-m²n)+(5m²)(8) = -5 m⁴n + 40m²

2.(9x-y)(-7y-3xy)

(9x-y)(-7y-3xy)  =(9x)(-7y)+(9x)(-3xy)+(-y)(-7x)+(-y)(-3xy) =-63 xy- 27x²y +7xy+3x²y

haciendo la suma de términos semejantes

-63 xy- 27x²y +7xy+3x²y = - 24x²y - 60 xy

3.(8a²b)(-6a³b² +5a² b³- 3)

( 8a²b)(-6a³b² ) + (8a²b )(5a²b³ ) +  (8a²b )( -3) = - 48a⁵b⁴+40a⁴b⁴ -24a²b

4.(2mn²)(-5mn⁴ -8m²n³ +10m³n² )

(2mn² )( -5mn⁴) + (2mn² )(-8m²n³ )+ (2mn²)(10m³n²) =-10m²n⁶-16m³n⁵+20m⁴n⁴

5.(15x²y-4x y³)(-3xy)

(15x²y )(-3xy ) + ( -4x y³ )(-3xy ) = - 45 x³y² +12xy⁴