Question

(ab - 9)(ab + 8)

Answer 1

(ab)^2-ab-72

Answer 2

it says that not right, cause i got the same thing

Answer 3

what was the question? like what did it say other than that?

Answer 4

just that.

Answer 5

hmmm that should b the answer unless they want
\[a^2b^2-ab-72\]

Answer 6

yup! thats what they wanted :) thanks