Datrys 10(10^-5)-log_{10}(1000)*log_{10}(5^2*4)

$$10 ( 10 ^ { - 5 } ) - \log _ { 10 } ( 1000 ) * \log _ { 10 } ( 5 ^ { 2 } * 4 )$$

Enrhifo

$$-\frac{59999}{10000}=-5.9999$$

Camau Ateb

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 1 a -5 i gael -4.

$$10^{-4}-\log_{10}\left(1000\right)\log_{10}\left(5^{2}\times 4\right)$$

Cyfrifo 10 i bŵer -4 a chael \frac{1}{10000}.

$$\frac{1}{10000}-\log_{10}\left(1000\right)\log_{10}\left(5^{2}\times 4\right)$$

Bas logarithm 10 1000 yw 3.

$$\frac{1}{10000}-3\log_{10}\left(5^{2}\times 4\right)$$

Cyfrifo 5 i bŵer 2 a chael 25.

$$\frac{1}{10000}-3\log_{10}\left(25\times 4\right)$$

Lluosi 25 a 4 i gael 100.

$$\frac{1}{10000}-3\log_{10}\left(100\right)$$

Bas logarithm 10 100 yw 2.

$$\frac{1}{10000}-3\times 2$$

Lluosi 3 a 2 i gael 6.

$$\frac{1}{10000}-6$$

Tynnu 6 o \frac{1}{10000} i gael -\frac{59999}{10000}.

$$-\frac{59999}{10000}$$

Ffactor

$$-\frac{59999}{10000} = -5\frac{9999}{10000} = -5.9999$$