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2014-11-08T15:20:15+02:00
( 2³⁰-2¹⁰)²=2⁶°-2⁴¹+2²°
Folosim aceasta formula (a-b)²=a²-2ab+b²
( 2√5 - 3√2 )²=20-12√10+18=38-12√10