Răspuns :

Diacovaci1727id

Răspuns:

a)x^2:4=9

x^2=9×4

x^2=36

x=radical din 36

x=6

b)25^2-x=24^2

625-x=576

-x=576-625

-x=-49

x=49

c) x:10^3=10^0

x:100=1

x=1×100

x÷100

d)441:x=21^2

441:x=441

x=441:441

x=1

e) x-2^5=5^3

x-32=125

x=125+32

x=157

f)324:x=3^2

324:x=9

x=324:9

x=36

Explicație pas cu pas:

sper sa te ajute

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==