Question

Dau coroana ,repede,am nevoie

Answer 1

Răspuns:

a) Numitor comun 6

3(3x-2) - 2(x-4) = 30

9x-6-2x+8=30

7x+2=30

7x=28

x=4

b)E1(x)=x^2(x+3) - 4(x+3)

E1(x)=(x+3)(x^2 - 4)

E1(x)=(x+3)(x-2)(x+2)

E2(x)=x^2(x+2) - 9(x+2)

E2(x)=(x+2)(x^2 - 9)

E2(x)=(x+2)(x+3)(x-3)

x^3 + 3x^2 - 4x - 12 - x^3 - 2x^2 + 9x + 18 =

x^2 + 5x + 6 =

x^2 + 2x + 3x + 6 =

x(x+2) + 3(x+2) =

(x+2)(x+3)

Answer 2

Salut! Ai in poze. Succes!