Is the answer correct?

Question: Factorise 121 - (p+2)Square

My answer: (p+13)(p-9)

Don't know whether if it is (p+39)(p-3) or (p+13)(p-9 or maybe i am wrong

Please check this for me

Thanks a lot

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- Feb 12th 2011, 04:47 AMFailInMathsIs the answer correct?
Is the answer correct?

Question: Factorise 121 - (p+2)Square

My answer: (p+13)(p-9)

Don't know whether if it is (p+39)(p-3) or (p+13)(p-9 or maybe i am wrong

Please check this for me

Thanks a lot - Feb 12th 2011, 04:51 AMskeeter
- Feb 12th 2011, 05:51 AMCalye
The answer is (9-p)(13-p).

Remember the difference of 2 squares formula.

That a2-b2=(a+b)(a-b)

P.S. @skeeter how do you type the square of the numeral. - Feb 12th 2011, 05:53 AMProve It
In math tags you type ^{}, e.g. 3^{25} gives $\displaystyle \displaystyle 3^{25}$.

- Feb 12th 2011, 05:56 AMbugatti79