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Jika x memenuhi persamaan 4 x + 2 1 ​ + 2 3 − 2 x = 17 ,maka nilai 2 2 x + 1 = ...

Jika x memenuhi persamaan  ,maka nilai

  1. begin mathsize 14px style 3 over 2 space atau space 16 end style

  2. begin mathsize 14px style 3 over 2 space atau space 1 half square root of 2 end style

  3. begin mathsize 14px style 3 over 2 space atau space 5 end style

  4. begin mathsize 14px style 1 half square root of 2 space atau space 2 square root of 2 end style

  5. 2 atau 5

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H. Nufus

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

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Misalkan

4 to the power of x plus 1 half end exponent plus 2 to the power of 3 minus 2 x end exponent equals 17  2 to the power of 2 x plus 1 end exponent plus 2 to the power of 3 minus 2 x end exponent equals 17  2.2 to the power of 2 x end exponent plus 8.2 to the power of negative 2 x end exponent equals 17

Misalkan begin mathsize 14px style 2 to the power of 2 x end exponent equals y end style

fraction numerator 2 y plus begin display style 8 over y end style equals 17 over denominator blank end fraction space space space space space x y
2 y squared minus 17 plus 8 equals 0  left parenthesis 2 y minus 1 right parenthesis left parenthesis y minus 8 right parenthesis equals 0  y equals 1 half space logical or space y equals 8  2 to the power of 2 x end exponent equals 1 half space logical or space 2 to the power of 2 x end exponent equals 8  2 to the power of 2 x plus 1 end exponent equals 2.2 to the power of 2 x end exponent equals 1 space logical or space 2 to the power of 2 x plus 1 end exponent equals 2.2 to the power of 2 x end exponent equals 16

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