Oblicz wartość wyrażenia, jeśli a = -4:
a) ||a|-a|
jeśli c= - pierwiastek z 5
||1+c|+c|
1-|3c+|2c-4||
a) IaI+a= a+a
-4+(-4)= -4-4=-8
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a) IaI+a= a+a
-4+(-4)= -4-4=-8