Prove that p, q and r must be perfect squares.

Ok so the rule for a square is:

So then therefore if you square it which goes to

Where did I go wrong?

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- May 19th 2010, 10:10 AMMukilabProve perfect squares

Prove that p, q and r must be perfect squares.

Ok so the rule for a square is:

So then therefore if you square it which goes to

Where did I go wrong? - May 19th 2010, 11:04 AMPim
I think you went wrong in your first step.

If you substitute into you get:

and not what you wrote

Another thing is that

it doest equal , where you multiply out the brackets. - May 19th 2010, 12:11 PMundefined
- May 19th 2010, 01:11 PMMukilab
That's the formula for proving the square of a number using the previous number squared.

- May 19th 2010, 01:12 PMMukilab
I don't know if it's a matter of whether p, q and r are perfect squares or not.

Never mind, this question does not apply to me anymore and I have far more tricky questions to get around :P - May 19th 2010, 01:16 PMundefined