multiply the following polynomials
1.)5m(8m)=
2.)-2a² (3a²)=
3.)2x³(2x²-x)=
4.)3y(8y²+y-1)
5.)(a)(a²+2a+1)=


Sagot :

Answer:1. 13m

Step-by-step explanation:

Answer:

1. 40m²

2. -6a⁴

3. 4x⁵-2x⁴

4. 24y³+3y²-3y

5. a³+2a²+a

Step-by-step explanation:

1. 5•8 = 40

mx•m = m²

=40m²

2. -2•3 = -6

a²•a² = a⁴ (just add the exponents)

= -6a⁴

3. 2x³•2x² = 4x⁵ (again just add the exponents)

2x³• -x = -2x⁴ (supposedly it is understandable that -x has an exponent of 1)

= 4x⁵-2x⁴

4. 3y•8y² = 24y³

3y•y = 3y²

3y• -1 = -3y

= 24y³+3y²-3y

5. a•a² = a³

a•2a = 2a²

a•1 = a

= a³+2a²+a