Question

$\sqrt{5} + \sqrt{12} + 2 \sqrt{45}$
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Answer 1

Răspuns:

    $7\sqrt{5}+2\sqrt{3}$

Explicație pas cu pas:

$\sqrt{5}+\sqrt{12}+2\sqrt{45}\\\sqrt{5}+2\sqrt{3}+6\sqrt{5}\\7\sqrt{5}+2\sqrt{3}$

Answer 2

$\it \sqrt{5} + \sqrt{12} + 2\sqrt{45} = \sqrt{5} + 2\sqrt{3} + 2 \cdot 3\sqrt{5} = \sqrt{5}  + 2\sqrt{3} + 6\sqrt{5} = 7\sqrt{5} + 2\sqrt{3}$