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erastovalidia [21]
3 years ago
5

What is the true solution In 20+In 5=2 In x?

Mathematics
1 answer:
S_A_V [24]3 years ago
7 0

Answer:

x = 10

Step-by-step explanation:

Using the rules of logarithms

• log x + log y ⇔ log(xy)

• logx^{n} ⇔ n log x

• log x = log y ⇒ x = y

Given

ln20 + ln5 = 2 lnx , then

ln(20 × 5) = lnx^{2}

ln 100 = lnx^{2}, hence

x² = 100 ( take the square root of both sides )

x = 10

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