Please work out -80 ÷ -8​

Which expression is equivalent to the expression below? (6c^2 + 3c) / (-4c + 2) / (2c + 1) / (4c - 1)a. 3c(2c-1) / (2c + 1)b. -3c(2c-1)^2 / (2c + 1)^2c. 3cd. -3c(just took the test its d. -3c)

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

How do you solve a question like this?