## steve816 one year ago Easy quick question!

1. steve816

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2. steve816

I feel stupid not knowing this, but I always don't know which term to square

3. FireKat97

$(a \sqrt{b})^2 = (a)^2.(\sqrt{b})^2 = a^2.b$

4. steve816

5. FireKat97

The square root and the square cancel because a square root can also be write-in the form of $(b)^{1/2}$ so when you square that you get $(b)^{\frac{ 1 }{ 2 } . 2}$ and according to index laws the 1/2 and 2 cancel so you just get $(b)^1$ which is just (b)

6. FireKat97

yeah that correct

7. steve816

thanks mate

8. FireKat97

no problem :)