Pertanyaan

Nilai x yang memenuhi persamaan 8 3 4 5 − x = 2 2 x + 1 1 adalah …

Nilai x yang memenuhi persamaan $\frac{3 4 ^{5 - x}}{8} = \frac{1}{2 ^{2 x + 1}}$ adalah …

-4
-1
2

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$begin mathsize 14px style fraction numerator cube root of 4 to the power of 5 minus straight x end exponent end root over denominator 8 end fraction equals 1 over 2 to the power of 2 straight x plus 1 end exponent straight space open parentheses 2 squared close parentheses to the power of fraction numerator 5 minus straight x over denominator 3 end fraction end exponent over 2 cubed equals 2 to the power of negative open parentheses 2 straight x plus 1 close parentheses end exponent 2 to the power of fraction numerator 10 minus 2 straight x over denominator 3 end fraction end exponent over 2 cubed equals 2 to the power of negative open parentheses 2 straight x plus 1 close parentheses end exponent 2 to the power of fraction numerator 10 minus 2 straight x over denominator 3 end fraction minus 3 end exponent equals 2 to the power of negative open parentheses 2 straight x plus 1 close parentheses end exponent fraction numerator 10 minus 2 straight x over denominator 3 end fraction minus 3 equals negative open parentheses 2 straight x plus 1 close parentheses rightwards arrow kali straight space 3 10 minus 2 straight x minus 9 equals negative 6 straight x minus 3 straight space 4 straight x equals negative 4 space space space straight x equals negative 1 end style$