b. 3^х-1-3^х+3^х+1 = 63...

манучар @манучар

July 2022 1 8 Report

b. 3^х-1-3^х+3^х+1 = 63

Answers & Comments

harbet333 (3^x)/3+3^x+3*3^x=63
замена 3^x=a
a/3+a+3a=63
a=9
x=3

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