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Cum calculam (x+2+√2)² ?


Răspuns :

(x+2+√2)²=[x+(2+√2)]²=x²+2*x*(2+√2)+(2+√2)²=x²+(4+2√2)*x+4+4√2+2=x²+(4+2√2)*x+6+4√2

x^2+4+2+4x+2x√2+4√2=x^2+6+2x√2+4√2