Question

$\sqrt{ {7 \times 1}^{2} } + \frac{13}{12 + \sqrt{3} } + \sqrt{2 \times 5 {}^{2} } + (9 \times 1) + \frac{5}{ 2} + x + y$
Solve by the substitution method​

Answer 1

Answer:

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Answer 2

Answer:

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