Question

$if \frac{a}{b} = \frac{c}{d} = \frac{e}{f} \: show \: that: \: (3 {a}^{2} - 4 {c}^{2} + 5 {e}^{2}): (3 {b}^{2} - 4 {d}^{2} + 5 {f}^{2}) = ac:bd$

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Answer 1

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