Question

Multiply 5c(9−4c)⋅45c−4c45c−20c2.

a) 225c²-20c²

b) 225c²+16c²

c) 225c²−29c²

d) 225c² −20c³

Answer 1

To multiply the given expression, simplify each expression separately and then multiply them together. The answer is 225c² - 20c³.

Step-by-step explanation:

To multiply 5c(9-4c)⋅45c-4c45c-20c2, we can start by simplifying each expression separately and then multiplying them together.

First, let's simplify 5c(9-4c) to get 45c-20c^2.

Next, let's simplify 45c-4c45c-20c^2 to get 225c^2-20c^3.

So, the answer is 225c^2-20c^3 (option d).