Mathematics
Grade10
Easy

Question

Solve 2 = open parentheses 4 to the power of 1 third end exponent close parentheses open parentheses 2 to the power of x over 3 end exponent close parentheses

  1. 2
  2. 5
  3. 1
  4. 9

hintHint:

Equal

The correct answer is: 1


    2 equals open parentheses 4 to the power of 1 third end exponent close parentheses open parentheses 2 to the power of 1 third end exponent close parentheses
    2 to the power of 1 equals open parentheses 2 to the power of 2 over 3 end exponent close parentheses open parentheses 2 to the power of x over 3 end exponent close parentheses
    2 to the power of 1 equals left parenthesis 2 right parenthesis to the power of 2 over 3 plus x over 3 end exponent (powers are added when bases are equal)
    2 to the power of 1 equals left parenthesis 2 right parenthesis to the power of fraction numerator x plus 2 over denominator 3 end fraction end exponent
    fraction numerator x plus 2 over denominator 3 end fraction equals 1      [Since the bases are equal, equate the powers]
    table attributes columnalign right end attributes row cell x plus 2 equals 3 end cell row cell x equals 1 end cell end table

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