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rezolvati ecuatia:
1.[tex] \sqrt{7-x}=1 [/tex]
2.log20+log3=log6
3.A[tex] A5^{3}+P2 [/tex]
4.[tex] \left[\begin{array}{ccc}2&0\\1&2\end{array}\right] determinant[/tex]


Răspuns :

1. 7-x = 1² => 7-x=1 => x= 6
2. log20+log3= log6 => log(20*3)=log6 => log 60 - log6= log (60/6)= log 10
3 nu inteleg enuntul
4. det 2*2 - 1*0 = 4 ≠0