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zheka24 [161]
3 years ago
13

2. Solve for x. More than one answer may be correct. Select all correct choices.*

Advanced Placement (AP)
1 answer:
shtirl [24]3 years ago
7 0

Answer:

None of these are correct

The value x = 35 is correct

Explanation:

<u><em>Step(i):</em></u>-

Given

         log^{2} _{10} + log^{(x+5)} _{10} = 2

We will apply logarithmic formula

log(a) + log (b) = log a b

  logₓ a = b

⇒   a = xᵇ

<u><em>Step(ii)</em></u>:-

       log^{2} _{10} + log^{(x+5)} _{10} = 2

    log^{2(x+15)} _{10} = 2

⇒  2 ( x + 15 ) = 10²

⇒ 2 x + 30 = 100

⇒  2 x = 70

⇒  x = 35

<u><em>Final answer:-</em></u>

x = 35

<u><em>Verification:-</em></u>

<u><em></em></u>

 log^{2} _{10} + log^{(x+5)} _{10} = 2

    log^{2(35+15)} _{10} = 2

   log^{(100)} _{10} = 2

  log^{(10)^{2} } _{10} = 2

log x ⁿ = n log x

2 log¹⁰ ₁₀     = 2

2 =  2       (  log¹⁰ ₁₀ = 1

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