Question

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expressões numéricas

72.[4³-11+2.26)]

42.[4.(32-4.7)-1]:63

25+{3³:9+[3².5-3.(2³-5¹)]}
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Answer 1

Resposta:

a)

72* [4³-11+2*26)]

72* [64-11+2*26)]

72* [64-11+52)]

72* [64-11+52)]

72 * 105

= 7560

b)

42*[4*(32-4*7)-1]/63

42*[4*(32-28)-1]/63

42*[4*(4)-1]/63

42*[16)-1]/63

42*15/63

630/63

=10

c)

25+{3³/9+[3²*5-3*(2³-5¹)]}

25+{27/9+[3²*5-3*(2³-5¹)]}

25+{3+[9*5-3*(2³-5¹)]}

25+{3+[45-3*(8-5)]}

25+{3+[45-3*3]}

25+{3+[45-9]}

25+{3+36}

25+39

=64

Answer 2

Resposta:

Explicação passo a passo:

expressões numéricas

A)

= 72.[4³-11+2.26)]

= 72.[64-11+52]

= 72.[53+52]

= 72.105

= 7560

__________

B)

= 42.[4.(32-4.7)-1]:63

= 42.[4.(32-28)-1] : 63

= 42.[4.4-1] : 63

= 42.[16-1] : 63

= 42.15 / 63 (:7)/(:7)

= 6.15/9

= 90/9

= 10

_____*_

C)

= 25+{3³:9+[3².5-3.(2³-5¹)]}

= 25+{27:9 + [9.5-3.(8-5)]}

= 25+{3 + [45- 3.3]}

= 25 + {3 + [45-9]}

= 25 + {3+36}

= 25 + 39

= 64