What is "(x+4)*(2x+5)"?
You can multiply it out like this:
(x + 4)*(2x + 5)
Multiply each thing in the first set of parenthesees by each thing in the second set of parenthesees and add the products together.
2x2 + 5x + 8x + 20
Combine like terms:
2x2 +13x + 20
Thank you!
