Answer:
9xx2401x=21609x
Step-by-step explanation: 3x3=9. 40x40=1600, 40x9=360x2 because there are 2 of the same problem because the number is the same. 9x9=81.
Now we add them up. 1600+720+81=2401. 2401x9=21609
But don't forget to add the x at the end or the answer is wrong!!!
