Ma4556idn
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can you help me ? 20^n-2+6.5=87

Sagot :

Panoyinidn
20n - 2 + 6.5 = 87
20n + 4.5 = 87
         -4.5    -4.5
         20n = 82.5
          20       20
             n = 4.125
or
20^n - 2 + 6.5 = 87
20^n + 4.5 = 87
           -4.5     -4.5
         20^n = 82.5
               n ≈ 1.037
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