How do I work out these? ...

P (7p-3)

3 (2y-1) + 2 (3y+1) =

U (3u+2) + 2u (u-1) =

1) p (7p - 3)

= (p) (7p + - 3)

= (p) (7p) + (p) (-3)

= 7 p2 - 3 p

Answer is: 7p2-3p

2) 3 (2y-1) + 2 (3y+1)

Distribute:

= (3) (2y) + (3) (-1) + (2) (3y) + (2) (1)

Combine Like Terms:

=6y+-3+6y+2

= (6y+6y) + (-3+2)

=12y+-1

Answer is: 12y-1

3) u (3u + 2) + 2u (u-1)

Distribute:

= (u) (3u) + (u) (2) + (2u) (u) + (2u) (-1)

= 3 u2 + 2u + 2 u2 + - 2 u

Combine Like Terms:

3 u2 + 2u + 2 u2 + - 2 u

(3 u2 + 2 u2) + (2u + - 2u)

5 u 2

The answer is: 5 u and the unit of 2

5 u 2