Question

Va rog ajutor ofer 15 puncte am nevoie

Answer 1

I x²-2x-x²+6x-9 I=3
I 4x-9 I = 3

   4x-9=-3  ⇔    x=6/4

    4x-9=3 ⇔   x=3

       S={6/3 ; 3}

Answer 2

|x(x-2)-(x-3)^2|=3
|x^2 -2x-x^2+6x-9|=3
|4x-9|=3
Cobsideram cele doua cazuri
Cazul 1
4x>9
4x-9=3
4x=12
x=3
Cazul 2
4x<9
9-4x=3
4x=6
x=6/4 ( nu este mentionat a carei multimi apartine x)
Asadar, x€{3,6/4}
Bafta multa!!