Given:

$a = (x + y)$

$b = (x - y)$

$a b = x^{p} - y^{q}$

Then, p+q=___.

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Solution

Given:

$a = (x + y)$

$b = (x - y)$

$a b = x^{p} - y^{q} = x^{2} - y^{2}$

Then, p+q=2+2=4

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