Question

Откуда взялось число7,56p?

Answer 1

Давайте так.

$\frac{2 \times 4p}{(0.3p - 3)(2p - 5.2)} = \frac{8p}{0.3p \times 2p - 5.2 \times 0.3p - 3 \times 2p + 5.2 \times 3} = \frac{8p}{0.6 {p}^{2} - 1.56p - 6p + 15.6 } = \frac{8p }{0.6 {p}^{2} - 7.56p + 15.6 }$