Question

1.(x+5) (x-4 ) 2. (m-6) (m+5) 3. (-a-2) (-a-3) 4. (-7m+n) ( m-1) 5. (3a+b) ( 2a-7 ) en forma horizontal porfavor , rápido

Answer 1

1. (x+5) (x-4 )
x2- 4x+5x-20
x2 + x -20

2. (m-6) (m+5)
m2+5m-6m-30
m2-m-30

3. (-a-2) (-a-3)
a2+3a+2a+6
a2+5a+6

4. (-7m+n) ( m-1)
-7m2+7m+nm-n

5 . (3a+b) ( 2a-7 )
6a2-21a+2ba-7b