Vreau si eu exercitiul 4 va rog frumos.Multumesc apreciat.
Răspunsuri la întrebare
a) ( - 3 ) + ( - 7 ) + ( - 11 ) - ( - 21 ) + ( - 3 ) - ( - 1 ) = - 2
= - 3 - 7 - 11 + 21 - 3 + 1 =
= - 10 - 11 + 18 + 1 =
= - 21 + 19 =
= - 2
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b) - ( - 7 - 9 - 20 ) + ( - 3 + 11 - 21 ) = 13
= - ( - 16 - 20 ) + ( 8 - 21 ) =
= - ( - 36 ) + ( - 13) =
= 36 - 13 =
= 13
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c) 5 · ( - 6 ) - 4 · ( - 2 ) + 6 · ( + 7 ) - 3 · ( - 15 ) = 65
= - 30 + 8 + 42 + 45 =
= - 22 + 87 =
= 65
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d) 100 : ( - 50 ) · 4 - ( - 7 ) · ( - 4 ) : ( - 28 ) - 15⁰ = - 8
= ( - 2 ) · 4 - 28 : ( - 28 ) - 1 =
= - 8 + 1 - 1 =
= - 8
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e) - 3³ - ( - 2 )² + 1⁸ - 5⁰ - 0⁴ - ( - 1 )³³ = - 30
= - 27 - 4 + 1 - 1 - 0 + 1 =
= - 31 + 1 =
= - 30
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f) 5³ x 5⁸ : ( - 25 )⁵ - ( 2⁵ x 3⁵ ) : ( - 6 ) ⁵ + 16³ : ( - 8 )³ = - 12
= 5¹¹ : ( - 5²)⁵ - ( 2 x 3 )⁵ : ( - 6 )⁵ + ( 2⁴)³ : ( - 2³ )³ =
= 5¹¹ : ( - 5¹⁰) - (6⁵) : ( - 6)⁵ + 2¹² : ( - 2⁹) =
= - 5 - ( - 6 )⁰ - 2³ =
= - 5 + 1 - 8 =
= - 12
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g ) [a⁷ x ( - a )⁵ ]³ + [ ( - a )³x ( - a )¹⁵ ]² = 0
= ( - a¹²)³ + ( a¹⁸)² =
= - a³⁶ + a³⁶ =
= 0