What's next in this number sequence: 52, 32, 22, 14, x?

Answer 1

52, 32, 22, 14, 6
52-5*2*2=32
32-3*2*2=22
22-2*2*2=14
14-1*4*2=6

Comments

in the last step,why you multiplied by 4 instead of 2?kindly elaborate it.

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calculation step for next term if the number is ab-> ab - a*b*2, in this case it is 14- 1*4*2=6