Question

(root5+root7)square 2

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Answer 1

Answer:

$= ( \sqrt{5} + \sqrt{7} ) {}^{2} \times 2 \\ = {( \sqrt{5} ) {}^{2} + ( \sqrt{7} ) {}^{2} + 2( \sqrt{5} )( \sqrt{7} ) }\times 2 \\ =( 5 + 7 + 2 \sqrt{35} ) \times 2 \\ = (12 + 2 \sqrt{35} ) \times 2 \\ = 24 + 4 \sqrt{35}$

Step-by-step explanation:

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