Question

Please answer to the question in the attachment...​

Answer 1

Answer:

$( \frac{a}{5} ) {}^{2} + ( \frac{b}{2} ) {}^{2} + (1) {}^{2} - 2 \times (\frac{a}{5} )\times ( \frac{b}{2} ) - 2 \times (\frac{b}{2} ) \times 1 + 2 \times 1 \times (\frac{a}{5} ) \\ = ( \frac{a}{5} - \frac{b}{2} + 1) \times ( \frac{a}{5} - \frac{b}{2} + 1) \\ = ( \frac{a}{5} - \frac{b}{2} + 1) {}^{2}$

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