👤
Vickyvichy
a fost răspuns

Aflati x din:
a) 7 - 2x=1 x apartine lui n
b) [tex] \frac{3}{x-2} [/tex] = 0,(6) x apartine lui Q
c) 4x^2 = 100 x apartine lui Z
d) 5-3x ≥ - 4 x∈ N

Răspuns :

DarkLighT
a) -2x=-6
     x=[tex] \frac{-6}{-2} =3[/tex]
b) [tex]0,(6)= \frac{2}{3} [/tex]
    [tex] \frac{3}{x-2}= \frac{2}{3} [/tex]→2(x-2)=9 ...x-2=4.5.....x=6.5
c)[tex] 4x^{2} =100..... x^{2} =25........x=+sau - 5[/tex]

d) 5-3x[tex] \geq [/tex]-4
   [tex]-3x \geq -9.........x \leq \frac{-9}{-3} ...........x \leq 3[/tex]

Alte intrebari