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Repedee dau 30 puncte

Repedee Dau 30 Puncte class=

Răspuns :

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Vezi imaginea NICO234679GHD
a) 12 : ( 3 - 4 ) = 12 : 3 - 12 : 4

12 : ( - 1 ) = 4 - 12 : 4

12 : ( - 1 ) = 4 - 3

- 12 = 1

b) ( 15 - 27 ) : ( - 3 ) = - 5 - 27 : ( - 3 ) =

- 12 : ( - 3 ) =

4 = - 5 : ( - 3 )

4 = - 5 + 5

4 = 4

c ) 3 × ( - 5 ) ^ 2 = ( - 15 ) ^ 2

3 × 25 = 225

75 | = 225

d) ( - 3 ) ^ 2 × ( - 2 ^ 4 ) = ( - 12 ) ^ 2

9 × 16 = 144

144 = 144