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WildAngel69
a fost răspuns

Va rog frumos
Efectuati:b)(2+radical din 7)la patrat
c)(radical din3-radical din2)la puterea a 3
d)(5+radical din5)la puterea a 3

Răspuns :

Renatemambouko
b)(2+√7)²=4+4√7+7=11+4√7
adica (a+b)²=a²+2ab+b²
c)(√3-√2)³=3√3-9√2+6√3×-2√2=9√3-11√2
adica (a-b)³=a³-3a²b+3ab²-b³
d)(5+√5)³=125+75√5+75+5√5=200+80√5
adica (a+b)³=a³+3a²b+3ab²+b³




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