Question

din nou:):( dau puncte si coroana​

Answer 1

Răspuns:

9⁴⁵:9⁴²-2¹·3³+20²=9⁴⁵⁻⁴²-2·27+400=9³-54+400=729-54+400=1075

4³·5²+225¹·12²-54⁰=

64·25+225·144-1=1600+32400-1=33999

3¹⁷·7¹⁷-21¹⁷=(3·7)¹⁷-21¹⁷=21¹⁷-21¹⁷=0

3¹⁸·8¹⁸:(6¹⁶·4¹⁶)=(3·8)¹⁸:(6·4)¹⁶=24¹⁸:24¹⁶=24¹⁸⁻¹⁶=24²=576

Answer 2

Răspuns:

Explicație pas cu pas:

a)  

9⁴⁵ : 9⁴² - 2¹ x 3³ + 20² = 1 075

= 9⁴⁵⁻⁴² - 2 x 27 + 400 =

= 9³ - 54 + 400 =

= 729 - 54 + 400 =

= 675 + 400 =

= 1 075

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b)

4³ x 5² + 225 x 12² - 54⁰ =

= ( 4 x 5)² x 4 + 25 x 9 x( 4 x 3)² - 1 =

= 20² x 4 + ( 25 x 4²) x 9 x 3² - 1 =

= 20² x ( 4 + 81 ) - 1 =

= 400 x 85 - 1 =

= 34 000 - 1 =

= 33 999

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c)

3¹⁷ x 7¹⁷ - 21¹⁷ = (3 x 7 )¹⁷ - 21¹⁷ = 21¹⁷ - 21¹⁷ = 0

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d)  

3¹⁸ x 8¹⁸ : ( 6¹⁶ x 4¹⁶ ) = 576

= ( 3 x 8 )¹⁸ : ( 6 x 4 )¹⁶ =

= 24¹⁸ : 24¹⁶ =

= 24⁽¹⁸⁻¹⁶⁾ =

= 24² =

= 576