Question

How do you multiply `4m \cdot 7m ^ { 3}`?

Answer 1

`4m \cdot 7m ^ { 3}=(4*7)*(m)^[1+3]=28*m^4`

Explanation:

show below:

`4m \cdot 7m ^ { 3}=(4*7)*(m)^[1+3]=28*m^4`

not that

`x^n*x^m=x^[n+m]`

Answer 2

`28m^4`

Explanation:

Multiple `4` and `7`. you get `28` then add `m` and `m^3` you get `m^4`.

Answer 3

`28m^4`

Explanation:

An easy way of doing this would be expanding what each chunk means.
`4m = 4 * m`
and
`7m^3 = 7 * m * m * m`
So if you multiply `4m * 7m^3` you get
`4 * m * 7 * m * m * m`
You can then simplify this.
`4 * 7 = 28`
`m * m * m * m = m^4`
so `28 * m^4 = 28m^4`