9. Multiplica
• a) 6a + 2ab-862
Х
39-26
b) -3x4 + 2x - 4x²+2x-1
X
x² - 5x+3
c) -
x Alw
m'n +
mn' +-n
5 3 2
2m +3n
d) 2x+3 - 4xm+2 - 32+1 - 2x
1
1
X Х
-X
2.
4
m-1
Xm-2
+xn-3​