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FluttershyFluttershy
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Calculati: a=(4+8+12+...+504):(2+4+6+...+102)

Răspuns :

Flavistin
[tex]a=(4+8+12+......+504):(2+4+6+......+102) \\ a=[4*(1+2+3+....126)]:[2*(1+2+3+...+51)] \\ a=(4*\frac{126*(126+1)}{2}):(2*\frac{51*(51+1)}{2}) \\ a=(2*126*127):(51*52) \\ a=32004:2652[/tex]

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