Step-by-step explanation:
At the bottom, there is a hint to solve (-9) x (-9)
Negative times negative is positive
Meaning that -1 x -1 would equal to 1
-9 x -9 = ?
Isolate the negatives
(- -)(9x9)
Open parenthesis
You can answer the rest on your own.
Hope this helps :)
Have a great day!
