Math help

[Thorax]

4r^-3 x 2r²

I need to simplify this as review, but the process escapes me. If someone could solve it step-by-step, that would of great help to me for solving the rest of the problems. Thanks.

[Ad Bot]

[Skyler97]

/google

[Saber15]

8r^(-1)
thought that was a 3r^2


Wild mass guessing

/google

what this guy said.

[Daedalus]

-24r?

[Thorax]

/google

You think I haven't tried that?

12r^(-1)

Wild mass guessing
what this guy said.

Also, It has to end in a positive exponent.

[Skyler97]

You think I haven't tried that?
Also, It has to end in a positive exponent.

Goodluck on your math quest then m8

[Saber15]

You think I haven't tried that?

Buy a 100$ Texas Instruments calculator, download programs to solve equations like that, cheat through the entire course.

[Daedalus]

Is it -48r?

[Skyler97]

Buy a 100$ Texas Instruments calculator.

I got one of those at a yard sale.

[Saber15]

I got one of those at a yard sale.

I bought a Casio one for 2$ at Goodwill.

[Dodger]

256r?

[Saber15]

256r?

It's 4r^-3, not 4r^3

[Otis Da HousKat]

4r^-3 x 2r²
(4)(r^-3)(2)(r²)
Collect terms
(4x2)(r^-3xr²)
When multiplying variables with exponents you add the exponents together.
8r^-1
r^-1 is the inverse of r, that is r^-1= 1/r
So
8(1/r)
8/r

[Thorax]

Buy a 100$ Texas Instruments calculator, download programs to solve equations like that, cheat through the entire course.

I have one, but it doesn't matter because I don't know the process.

Also, please solve them step-by-step.[/s]

Thanks Otis.

[Skyler97]

4r^-3 x 2r²
(4)(r^-3)(2)(r²)
Collect terms
(4x2)(r^-3xr²)
When multiplying variables with exponents you add the exponents together.
8r^-1
r^-1 is the inverse of r, that is r^-1= 1/r
So
8(1/r)
8/r

What?