question im working on at the moment is squares(adsbygoogle = window.adsbygoogle || []).push({});

when is (a+b)^2 eather (a+b)(a+b) useing foils law or when (a+b)(a-b) using foils law.

im stuck to when you use which one.

i think they are when you use quadratic x^2+x+1=0 for the first one or -1 at the end for the second one.

i hope you can help.

2. Relevant equations

3. The attempt at a solution

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# (a+b)^2 using mulitplying in brackets

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