How do you solve (5w - 1) (w+4)

(5w-1) (w+4)

5w^2 + 20w - 1w - 4

5w^2 - 19w-4 is your answer

(5w - 1) (w + 4)

First distribute 5w into the second expression.

(5w X w) + (5w X 4)

5w² + 20w

Next, we'll work on the second half of the first expression to find out the rest ...

(-1 X w) + (-1 X 4)

-w - 4

If we combine like terms of the first and second expression, we have our answer.

5w² + 19w - 4