4d(2d - 9)
explain
To expand the expression 4d(2d - 9):
1. Distribute the 4 to both terms inside the parentheses:
4d(2d - 9) = 8d^2 - 36d
Final Answer: 8d^2 - 36d
To simplify the expression 4d(2d - 9), we need to use the distributive property. This property states that when a number is multiplied by a sum or difference, you can distribute the number to each term inside the parentheses.
First, distribute the 4d to both terms inside the parentheses:
4d * 2d = 8d^2
4d * (-9) = -36d
So, the expression becomes:
8d^2 - 36d