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Calculati utilizand formula: (a+b)²=a²+2ab+b²

1. (a√5+2)²=??
2. (a√3+b√2)²=??



Răspuns :

1. (a√5+2)²=5a²+4a√5+4;
2. (a√3+b√2)²=3a²+2ab√6+2b²
5a²+4a√5+4   si     3a²+2ab√6+2b²