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ex 2 si 3
Ofer coroana​


Ex 2 Si 3 Ofer Coroana class=

Răspuns :

Răspuns:

2.

c. 7x(x-5)-4x(x-8)-(radical 3x)²

7x²-35x-4x²+32x-3x²

6x²-3

b. (radical 3x)²-3(x+1)(x+2)+9x

3x²-3(x²+2x+x+2)+9x

3x²-3x²-6x²-3x-6+9x

6x²-6x-6

d. 5x(x-3)-3x(x-4)-(radical 2x)²

5x²-15x-3x²+12x-2x²

5x²-3x