TESTUL 1
5 75x7.
Efectuati calculele:
b)(3x + 2y333* *).
(4)-(3x + 2X3x 2):
d)(
25462xx 24
ex(4-1) 4(2x + 3)(2x 3);
(5x + 1 x 5 x 1) (.
3. Efectuati, folosind formulele de calcul prescurtat
a) (2x + 1) (3x + 4) + (3x + 2)
b) (4х 37 (2x - sf (3x 47.
c)(3x + 4) - 2x + 7) - (x + 3%
d) (2x 5) (W*+27 7:
e) (2x + 3)(263) (x+ Dax D) (x+3)
(3x + 2)(3x 2) (3x 1)(x + 4) (2x + 1).​
VĂ ROG AJUTOR