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ex 8 si 9 . ajuuuuutor

Ex 8 Si 9 Ajuuuuutor class=

Răspuns :

8)
x√(3-2√3)² =6√3-9

3-2√3<0
√(3-2√3)² =I(3-2√3)I=-(3-2√3)=2√3-3
x√(3-2√3)² =6√3-9
x(2√3-3)=3(2√3-3)
x=3


9)√5(x-√5)=x(√5-1)
x√5-5=x√5-x
x=5