Answer:
a^2-a-72 = (a+8)(a-9)
Step-by-step explanation:
To find the answer of -a
(+9a)(-8a) = a
(-9a)(+8a) = -a
So it is 8 and -9
Final answer (a+8)(a-9)
I hope it helps
Correct me if I'm wrong
\<(^O^)>/
