How do you multiply (3p+5)(2p-4)?

1 Answer
May 7, 2017

6p^2-2p-20

Explanation:

Start with the 3p. Multiply this by 2p and then by -4 to get 6p^2 -12p. Then do the same with the -5. This will get yo 10p-20. Add these two equations together into 6p^2-12p+10p-20, and simplify inti 6p^2-2p-20.

If it helps you can think of it like a claw.
In the format (a+b)(c+d), draw lines from a to c and d, and then from b to c and d underneath. The end result looks a bit like a crab claw and is an easy way to remember how to go about attempting these questions.
Use steps, and add them together into a final equation to make sure you don't get confused. Don't worry about doing too much working out! It's impossible to have such a thing.