I use box method to solve this...:
100x^2+34x+49
I hope you wanted the formula! :)
Required area of shaded portion
= Area of square ABCD - 4 × area of one quadrant

Answer:
22 Nah I'm kidding, it's 4
Step-by-step explanation:
This was fun
The answer is 41 because all of the them are in the 7 times table .so I deducted 2 from each one of them and 41 was not part
The answer is: 1003361548