Подстановка условия
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(p - sqrt(p)*sqrt(q))*(q - sqrt(p)*sqrt(q)) при q = 3
/ ___ ___\ / ___ ___\
\p - \/ p *\/ q /*\q - \/ p *\/ q /
$$\left(- \sqrt{p} \sqrt{q} + p\right) \left(- \sqrt{p} \sqrt{q} + q\right)$$
/ ___ ___\ / ___ ___\
\-p + \/ p *\/ q /*\-q + \/ p *\/ q /
$$\left(\sqrt{p} \sqrt{q} - p\right) \left(\sqrt{p} \sqrt{q} - q\right)$$
$$q = 3$$
/ ___ _____\ / ___ _____\
\-p + \/ p *\/ (3) /*\-(3) + \/ p *\/ (3) /
$$\left(\sqrt{(3)} \sqrt{p} - (3)\right) \left(\sqrt{(3)} \sqrt{p} - p\right)$$
/ ___ ___\ / ___ ___\
\-p + \/ p *\/ 3 /*\-3 + \/ p *\/ 3 /
$$\left(\sqrt{3} \sqrt{p} - 3\right) \left(\sqrt{3} \sqrt{p} - p\right)$$
/ ___ ___\ / ___ ___\
\-3 + \/ 3 *\/ p /*\-p + \/ 3 *\/ p /
$$\left(\sqrt{3} \sqrt{p} - 3\right) \left(\sqrt{3} \sqrt{p} - p\right)$$
(-3 + sqrt(3)*sqrt(p))*(-p + sqrt(3)*sqrt(p))