Question

(25V90:5V10) -37V81 +(2V5.3V5) -319
$25 \sqrt{90} \div 5 \sqrt{10} - 3 \sqrt{ \sqrt{81 + } } (2 \sqrt{5 \times 3 \sqrt{5) -3 \sqrt{9} } }$
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Answer 1

Problema

$\frac{25 \sqrt{90} }{5 \sqrt{10} } - 3 \sqrt{ \sqrt{81} } + (2 \sqrt{5} \times 3 \sqrt{5} ) - 3 \sqrt{9}$

Resolviendo

$\frac{25 \times 3\sqrt{10} }{5 \sqrt{10} } - (3 \times 3)+ ( 3 \times 2\sqrt{5 \times 5} ) -( 3 \times 3) \\ \\ 15 - 9 + 30 - 9 \\ \\ 27$