tolong di jawab dong yang no 1&2!!

2. a) -14x² + 6y²
    b) 6x -5y + 7

3. a) -2-4+ 3 = -6 + 3 = -3
    b) 3(-2) -4 + 2(3) = -6-4 + 6 = -10 + 6 = -4.
    c) 5(-2) +2(4) - 3(3) = -10 + 6 - 9 = -10 -3 = -13.