Question

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

Answer 1

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