Question

$5 - 3 \sqrt{9}$
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Answer 1

$5- 3\sqrt{9} = 5-3.9^{\frac{1}{2}} = 5- 3.(3^{2} )^\frac{1}{2} = 5-3. 3^\frac{2}{2} = 5- 3.3= 5- 9 = - 4$

Resposta: -4