No 9 dan 10 dong, kalau bisa sama caranya... pelajar sma baru nih :).... Question from @Afriadi12

December 2018 2 10 Report

No 9 dan 10 dong, kalau bisa sama caranya...
pelajar sma baru nih :)

MicoArrafi Nomor 9

$$\begin{align} \frac{\left({^5}\log x\right)^2-\left({^5}\log y\right)^2}{^5\log x-{^5}\log y}&=\frac{\left({^5}\log x-{^5}\log y\right)\left({^5}\log x+{^5}\log y\right)}{^5\log x-{^5}\log y}\\&={^5}\log x+{^5}\log y\\&=\boxed{^5\log xy} \end$

Jawaban: E.
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Nomor 10

$$\begin{align} ^3\log\left(x^2-4\right)+{^3}\log\frac{1}{x-2}&={^3}\log\frac{x^2-4}{x-2}\\&={^3}\log\frac{(x+2)(x-2)}{x-2}\\&=\boxed{^3\log(x+2)} \end$

Jawaban: C.

2 votes Thanks 3

HenryThomas 9)
= (5 log x-5 log y) (5 log x+5 log y)
(5 log x-5 log y)
= 5 log x + 5 log y
= 5 log xy (E)

10)
3 log (x²-4 . 1/(x-2))
3 log ((x+2)(x-2) . 1/(x-2) )
3 log (x+2) (C)

Semoga Membantu

1 votes Thanks 1

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No 14 gimana ya? kalau bisa sama caranya :)

Berapakah hasil dari 3log16? kalau bisa sama caranya..

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