Pertanyaan

Jika .diketahui x > 0 dan x = 1 , maka nilai x yang memenuhi persamaan x lo g ( x + 12 ) − 3 x lo g 4 + 1 = 0 adalah .......

Jika .diketahui x > 0 dan x = 1 , maka nilai x yang memenuhi persamaan $^{x} lo g (x + 12) - 3^{x} lo g 4 + 1 = 0$ adalah .......

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$x log left parenthesis x space plus space 12 right parenthesis minus space 3 x space log 4 plus 1 space equals space 0 space x log left parenthesis X space plus space 12 right parenthesis minus space x log space 43 space plus space x log space X space equals space x log space X 0 log space a space minus space log space b space equals space log space a over b log space a space plus space log space b space equals space log space a b to the power of x log space fraction numerator x left parenthesis x plus 12 right parenthesis over denominator 4 cubed end fraction equals to the power of x log x to the power of 0 fraction numerator x left parenthesis x plus 12 right parenthesis over denominator 4 cubed end fraction equals X to the power of 0 fraction numerator x left parenthesis x plus 12 right parenthesis over denominator 4 cubed end fraction equals 1 x squared space plus 12 x space equals space 64 x squared space plus space 12 x space minus space 64 space equals space 0 left parenthesis x plus 16 right parenthesis left parenthesis x minus 4 right parenthesis space equals space 0 x space equals space minus 16 comma x space equals space 4$