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# 6x^1,7+4=14

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6x^1,7+4=14
WHAT IS THE ANSWER

Guest Mar 11, 2015

#3
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just a little info here.

In many countries a comma is used instead of a decimal point.

Melody  Mar 11, 2015
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#1
+5

Hard to answer this without knowing what you mean. Instead of a comma, should there be another sign of operation?

Guest Mar 11, 2015
#2
+26640
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Assuming this is

$$6x^{1.7}+4=14$$

subtract 4 from both sides

$$6x^{1.7}=10$$

divide by 6

$$x^{1.7}=\frac{10}{6}$$

Take logs of both sides and use the fact that log(ab) = b*log(a) and log(a/b) = log(a) - log(b)

$$1.7\log{x}=\log{10}-\log{6}$$

divide by 1.7

$$\log{x}=\frac{\log{10}-\log{6}}{1.7}$$

Use the fact that log10a = b means a = 10b

$$x=10^{\frac{\log{10}-\log{6}}{1.7}}$$

and since log1010 = 1

$$x=10^{\frac{1-\log{6}}{1.7}}$$

You can complete the calculation.

.

Alan  Mar 11, 2015
#3
+92221
+5