Question

Factor 5z(2z+1)-2(2z+1)

Answer 1

(2z + 1)(5z -2)

Answer 2

i feel like i'm spamming....

Answer 3

You can do this in one of two ways:

1) Since (2z+1) is being multiplied by 5z and -2, the factor is (5z-2)(2z+1)

2) This second method is the long way which is the following:
10z^2+5z-4z-2 This was done by multiplying it out
10z^2+z-2
(5z-2)(2z+1) This is factoring out the above