Question

Exercițiile 2 şi 3 !
Vă rog !

Answer 1

Salut,


2. a = 3^100:3^98
a = 3^(100-98)
a = 3²
a = 9.

b = 3•2-2
b = 6-2
b = 4.

Mg = √a•b
Mg = √9•4
Mg = √3²•2²
Mg = 3•2
Mg = 6.


3. {x;y} dp {5;4}

x/5 = y/4 = k.

x/5 = k → x = 5k.
y/4 = k → y = 4k.

x+y = 54
5k+4k = 54
9k = 54
k = 54/9
k = 6.

x = 5k → x = 5•6 → x = 30.
y = 4k → y = 4•6 → y = 24.



Succes! :3

Answer 2

a = 3^2 = 9
b= 6-2 = 4

m.g . = radical 9x4 = radical 36 = 6 

3)
a=5k
b=4k
a+b=54
5k+4k=54
9k =54
k=54: 9 
k=6
a = 5x6= 30
b = 4x6=24 
30 + 24 = 54