Question

simplify
urgently needed​

Answer 1

First of all open the brackets,

then continue to solve

$\frac{1}{3} {p}^{2} - \frac{5}{7} {q}^{2} + \frac{2}{7} {z}^{2} - \frac{5}{3} {p}^{2} + \frac{12}{5} {q}^{2} - \frac{14}{5} {z}^{2}$

$( \frac{1}{3} {p}^{2} - \frac{5}{3} {p}^{2} ) + ( \frac{12}{5} {q}^{2} - \frac{5}{7} {q}^{2} ) + ( \frac{2}{7} {z}^{2} - \frac{14}{5} {z}^{2} )$

$\frac{4}{3} {p}^{2} + \frac{84 - 25}{35} {q}^{2} \: \: + \frac{10 - 98}{35} {z}^{2}$

$\frac{4}{3} {p}^{2} + \frac{59}{35} {q}^{2} - \frac{88}{35} {z}^{2}$

Hence, simplified

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