How do you solve a problem like this?
(-5x)(2x^2 - 3) - 4x

- anonymous

How do you solve a problem like this?
(-5x)(2x^2 - 3) - 4x

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- anonymous

Are you trying to simplify?

- anonymous

if you have to simplify then this would be a great help
https://mathway.com/

- anonymous

@DNTU4GETBOUTME Yes.

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## More answers

- anonymous

First you apply the distributive property. Do you know how to do that?

- anonymous

Yes; am I distributing the -4x?

- anonymous

The - 5x should be taking out of the parenthesis
You're going to take (2x^2-3) and seperate it. All and all you should end up with this −5x(2x^2)−5x(−3)−4x

- anonymous

Does that make sense?

- anonymous

I'm bad at explaining things. Moving on, next you should multiply x by x^2 to get x^3.

- anonymous

That turns into −5(2x3)−5x(−3)−4x . Next we're going to simplify −5x(−3). What do you get after doing that?

- anonymous

Multiply -5x by -3 to get 15x?

- anonymous

Correct! So now we have −5(2x3)+15x−4x

- anonymous

Next simplify −5(2x^3). You're doing really good :)

- anonymous

If you multiply -5 by 2x^3, you'll get -10x^3 right?

- anonymous

Yep! Now we have −10x^3+15x−4x. All we have to do now is add 15x and −4x.. which gives us?

- anonymous

11x.

- anonymous

Correct! So the answer is −10x^3+11x

- anonymous

Thank you very much for your help! Do you have time to help me with one more?

- anonymous

Sure!

- anonymous

4m - 3m(5m - 6)

- anonymous

Okay just like the first problem we're going to start by applying the distributive properties.

- anonymous

We're going to move the 5m and the -6 keeping them in their parenthesis. Do you know where to move them to?

- anonymous

To move them(after seperating them from each other, we're going to double a term. Just like the last problem

- anonymous

I'm sorry, I'm confused; where do we move them?

- anonymous

We're going to take negative 3 and add them there to get 4m−3m(5m)−3m(−6)

- anonymous

Next we're multipling m by m to get m^2. which simply changes our work to 4m−3(5m^2)−3m(−6)

- anonymous

Now we're going to simplify the last term −3m(−6)

- anonymous

that's 18m, right?

- anonymous

Correct! 4m−3(5m^2)+18m Now we simplify −3(5m^2)

- anonymous

-15m^2

- anonymous

Yep! We now have 4m−15m^2+18m

- anonymous

Now we add 4m and 18m together and get?

- anonymous

22m

- anonymous

But i'm a bit confused, aren't you supposed to add the 4m and -15m^2 together?

- anonymous

Correct! Great job! Our answer is −15m^2+22m

- anonymous

thank you again!

- anonymous

You're very welcome. Now you see how easy simplifying can be. I'm glad I could help

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