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манучар
@манучар
July 2022
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b. 3^х-1-3^х+3^х+1 = 63
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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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замена 3^x=a
a/3+a+3a=63
a=9
x=3