Question

1- Calcule: a) +5 + 9 =
b) -9 -5 =
c) (-9).(-5)
d) (+9) : (+3)
e) raiz quadrada de 144

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Answer 1

A) 5 + 9 = 14.

B) -9 -5 = -14.

C) (-9) (-5) = 45.

D) 9 : 3 = 3.

E) $\sqrt{144} =12$.

Answer 2

>>>Resolução:

a)-

$+ 5 + 9 = \\ 5 + 9 \\ 14$

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b)-

$- 9 - 5 = \\ - (9 + 5) \\ - 14$

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c)-

$( - 9) \times ( - 5) = \\ 9 \times 5 \\ 45$

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d)-

$( + 9) \div ( + 3) = \\ 9 \div 3 \\ 3$

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e)-

$\sqrt{144} \\ \sqrt{ {12}^{2} } \\ 12$