Question

efectueaza :..............

Answer 1

Răspuns

Explicație pas cu pas:

a)  [ ( 7² - 3² ) : 5 - 2²⁹ x 2²⁷ x 2] x 2017 =

= [ ( 49 - 9 ) : 5 - 2⁽²⁹⁺²⁷⁺¹⁾ ] x 2017 =

= ( 40 : 5 - 2⁵⁷ ) x 2017

= ( 8 - 2³ x 2⁵⁴ ) x 2017

Observatie:   Exercitiu este gresit !

In loc de 2²⁹ x 2²⁷ era 2²⁹ : 2²⁷ !

a ) [ ( 7² - 3² ) : 5 - 2²⁹ : 2²⁷ x 2 ] x 2017 = 0

= [ ( 49 - 9 ) : 5 - 2 ⁽ ²⁹ ⁻ ²⁷ ⁺ ¹⁾ ] x 2017 =

= ( 40 : 5 - 2³ ) x 2017 =

= ( 8 - 8 ) x 2017 =

= 0 x 2017 =

= 0

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c)  2017 + 2016 x 2017 - 2015 x 2017 = 4034

= 2017 x ( 1 + 2016 - 2015 ) =

= 2017 x ( 2017 - 2015 ) =

= 2017 x 2 =

= 4034

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e)   2017²⁰¹⁷ - ( 2016 x 2017²⁰¹⁷ + 2017²⁰¹⁷ ) : 2017 = 0

= 2017 ²⁰¹⁷ - 2017²⁰¹⁷ x ( 2016 + 1 ) : 2017 =

= 2017²⁰¹⁷ - 2017²⁰¹⁷ x 2017 : 2017 =

= 2017²⁰¹⁷ - 2017²⁰¹⁷ =

= 0

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g)   7 x [ 10 x ( 70 - 70 : 10 ) ] + 0²⁰¹⁷ x 2017⁰ =

= 7 x [ 10 x ( 70 - 7 ) ] + 0 x 1 =

= 7 x ( 10 x 63 ) + 0 =

= 7 x 630 =

= 4 410