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{2,5x(5+21[(1,2)²+(2,1²]÷3+5}÷2+1,7

Răspuns :

Nickygeo79

Răspuns:

nu se inteleg exact parantezele

{2,5x(5+21[(1,2)²+(2,1²]÷3+5}÷2+1,7=

{2,5x [5+21*(1,44+ 4,41)]:3 +5} :2+ 1,7=

[2.5x(5+21*5.85 :3 +5)]:2+1.7=

[2.5x( 5+40.95+5)]:2+1,7= (2.5x50.95):2 +1.7=

127.375 : 2+ 1.7= 63.6875 +1.7= 65.3875

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