Asked by Lena

The question is as followed:

Express (rootP + 2 x rootQ)(rootQ - rootP)

This is what I did:
(rootP + 2 x rootQ)(rootQ - rootP)
= rootPQ - p + 2q - 2 x rootPQ
= - rootPQ - p + 2q

Did I do this right and is this what the question was asking?
Answered by vince
explain how you know that 5.5 is to the right of 5 1/4 on the number line
Answered by Lena
because 5.5 is larger than 5.25?
what does that have to do with the question?
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