Salutare!
(a)
[tex]\bf x^{2} :2^{2} =3^{2}[/tex]
[tex]\bf x :2 =3\:\:\Big|\cdot 2 \:\: \text{(\it inmultim toata relatia cu 2)}[/tex]
[tex]\bf x :2 \cdot 2 =3 \cdot 2[/tex]
[tex]\boxed{\bf x =6}[/tex]
(b)
[tex]\bf 25^{2} -x =24^{2}[/tex]
[tex]\bf 625 -x =576[/tex]
[tex]\bf 625 =576+x[/tex]
[tex]\bf x=625 -576[/tex]
[tex]\boxed{\bf x=49}[/tex]
(c)
[tex]\bf x :10^{3} =10^{0}\:\:\Big|\cdot 10^{3}[/tex]
[tex]\bf x =10^{0}\cdot 10^{3}[/tex]
[tex]\bf x =10^{0+3}[/tex]
[tex]\boxed{\bf x =10^{3}}[/tex]
(d)
[tex]\bf 441 :x = 21^{2}[/tex]
[tex]\bf 441 :x = 441\:\:\Big|\cdot x[/tex]
[tex]\bf 441= 441\cdot x[/tex]
[tex]\bf x = 441: 441[/tex]
[tex]\boxed{\bf x = 1}[/tex]
(e)
[tex]\bf x-2^{5} = 5^{3}[/tex]
[tex]\bf x-32 = 125[/tex]
[tex]\bf x = 125+32[/tex]
[tex]\boxed{\bf x = 157}[/tex]
(f)
[tex]\bf 324 :x = (3^{2}\cdot 2)^{2}[/tex]
[tex]\bf 324 :x = (9\cdot 2)^{2}[/tex]
[tex]\bf 324 :x = 18^{2}[/tex]
[tex]\bf 324 :x = 324[/tex]
[tex]\bf x=324:324[/tex]
[tex]\boxed{\bf x=1}[/tex]
PS: la punctul f) nu se vede foarte bine ce este dupa egal si am scris eu cum ar fi completarea acestui subpunct
==pav38==
