Question

guys.,
plz answer my question......
it's really urgent........
please........
​

Answer 1

hi mate''

solution

2^m-1 + 2^m+1 = 640

so , mate

(1 + 2^2) * 2^m-1 = 640

(1 + 4) * 2^x-1 = 640

5 * 2^x-1 = 640

divide both side by 5

2^x-1 = 128

2^x-1 = 2^7

hence , mate here

x-1 = 7

x = 7+1

x = 8

so, i hope mate it helpfull to you..

Answer 2

REFER TO THE PIC

HOPE IT HELPS

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