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**jellyandicecream****Member**- Registered: 2005-12-13
- Posts: 2

I need to factorise this equation and i`ve tried but really can't find the answer!

10n² - 20N + 10

Help?

thanks.

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

First, take out the common multiple of 10.

10(n² - 2n + 1)

The bit in the brackets now factorises easily, to give:

10(n-1)²

Why did the vector cross the road?

It wanted to be normal.

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**jellyandicecream****Member**- Registered: 2005-12-13
- Posts: 2

Ah thanks!

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