Factor each expression and write the factored form in the table

Factored form

Expression

- 30x - 20

12x - 28

-10x-5

-30x - 20: We can see that both numbers have a factor of - 10, because 30 and 20 are multiples of 10 and - 30x and - 20 are both negative. So the factored form is - 10 (3x + 2).

12x - 28: The greatest common divisor of the two numbers is 4, so the factored form is 4 (3x - 7).

-10x - 5: Like the first problem, the biggest factor is - 5, so the factored form is - 5 (2x + 1).