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# HNC Maths/ simplifying equations watch

1. Hi everyone.

I am looking for someone to explain this problem in a very ‘simple simon’ manner.
Multiple 3x + 2y by x - y

Firstly I have added the X’s together to give myself 3x squared + 2y. But my book without any explanation then shows me

3xsquared + 2y squared 😕

Any help will be appreciated
2. (Original post by Chris -power)
Hi everyone.

I am looking for someone to explain this problem in a very ‘simple simon’ manner.
Multiple 3x + 2y by x - y

Firstly I have added the X’s together to give myself 3x squared + 2y. But my book without any explanation then shows me

3xsquared + 2y squared 😕

Any help will be appreciated
is not the correct final answer.

From (3x+2y)(x-y), we can split either bracket - I'll choose the second - to get:

(3x+2y)x - (3x+2y)y

Note the minus sign, since it was -y.

And tidy up

3. Hi thanks for you’re reply. Maybe if I had of been a little clearer from the start this would of helped more.

This is the example in question. I am trying understand this but having no real luck of having it translated into something that I can understand. (Simple terms)

Thank you for you’re help
4. Hi
Please check my attachment. Hope thats helpful

(Original post by Chris -power)
Hi everyone.

I am looking for someone to explain this problem in a very ‘simple simon’ manner.
Multiple 3x + 2y by x - y

Firstly I have added the X’s together to give myself 3x squared + 2y. But my book without any explanation then shows me

3xsquared + 2y squared 😕

Any help will be appreciated
Attached Images

5. (Original post by Chris -power)
Hi everyone.

I am looking for someone to explain this problem in a very ‘simple simon’ manner.
Multiple 3x + 2y by x - y

Firstly I have added the X’s together to give myself 3x squared + 2y. But my book without any explanation then shows me

3xsquared + 2y squared 😕

Any help will be appreciated

Well I can't see any "3xsquared + 2y squared" in that.

In the first part of the question.
3x+2y is firstly multiplied by x, giving one line.
Then 3x+2y is multiplied by -y, giving a second line (lining up corresponding terms together).

Then the two new lines are added together.

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