1.
(y - 2)(y - 4)
Multiply all terms on the right with y, then do the same with -2
Multiply y by y:

Then y by -4:

Then -2 by y:

Then -2 by -4:

We already have
first, then
and finally
, so we don't have to rearrange anything.
Answer: 
2.

Multiply all terms on the right with 6y^2:

Not sure which order is preferred here, you can put either the
term first or
.
Answer: 
3.

Multiply all terms in the right parenthesis with 2x^4 :

Answer: 
4.

First, multiply all terms on the right with 7x. Then do the same with 3.

Answer: 
5.


Multiply all terms on the right with 3x, then do the same with 4y:

Here, I choose to rearrange them to x^2, then y^2, then xy:
Answer: 
6.

Like previous similar ones, we multiply all terms in the parenthesis with -5x^6:

Answer: 
7.

Multiply all terms in the right parenthesis with -x^2y:

Here, you can also choose which order you believe is appropriate.
Answer: 
8.

Multiply the terms on the right with 7x, then with -3y:

Answer: 