Question

Factor the expression. 40z – 20

Answer 1

20(2z – 1)

Explanation:

Perfect! You were able to find that the greatest common factor is 20. Both 40z and -20 were then divided by 20 to get 2z - 1.

Answer 2

(2 x 5 x 2 x 2 x z) - (2 x 5 x 2)