☆1. 3x - 5x + 4x = -2x + 4x = 2x
☆2. 3x(x - 2) = (3x × x) - (3 × 2)
= 3x la a doua - 6
☆(× inseamna inmultire)
☆3. (6x la a doua + 3x) : (3x) =6x la a doua + 3x :3x ☆(excluzi parantezele) = 6x la a doua + 1 =7
☆4. [(2x la a doua) la a treia] = 2x la a sasea ☆(se inmultesc puterile)
☆5. (x+1)(x+3) = x la a doua+3x+x+3= xla a doua+4x+3
☆(ai gresit categ☆♡♡oria , dar nu mai conteaza)