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iren [92.7K]
3 years ago
13

Answer to this question plz

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
5 0

Answer:

55+14sqrt6

Step-by-step explanation:

Brums [2.3K]3 years ago
4 0

Answer:

55 + 14\sqrt{6}  

Step-by-step explanation:

You can FOIL

(7 + \sqrt{6} )^{2} = 49 + 7\sqrt{6} +  7\sqrt{6} + \sqrt{6} ^{2}

               = 49 + 14\sqrt{6} + \sqrt{6} ^{2}

              = 49 + 14\sqrt{6} + 6

              = 55 + 14\sqrt{6}  

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What’s the derivative of the function: A) f(x)= 1/x , in point 2. B) f(x)= 5x^2 , in point 3
bija089 [108]

Using the power rule, the derivatives are given as follows:

a) f^{\prime}(2) = -\frac{1}{4}.

b) f^{\prime}(3) = 30.

<h3>What is the power rule for a derivative?</h3>

Suppose we have a power function given by:

f(x) = x^n

The derivative of the function is given by:

f^{\prime}(x) = n \times x^{n-1}

Item a:

The function is:

f(x) = \frac{1}{x} = x^{-1}

Then the derivative is:

f^{\prime}(x) = -x^{-2} = -\frac{1}{x^2}

When x = 2, the derivative is:

f^{\prime}(2) = -\frac{1}{4}

Item b:

The function is:

f(x) = 5x^2

Then the derivative is:

f^{\prime}(x) = 10x

When x = 3, the derivative is:

f^{\prime}(3) = 30

More can be learned about derivatives at brainly.com/question/2256078

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2 years ago
Find the solution of the square root of the quantity of x plus 2 plus 4 equals 8, and determine if it is an extraneous solution
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Consider the equation:

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Subtracting '4' from both the sides of the equation, we get as

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Squaring on both the sides of the equation, we get

(\sqrt{x+2})^2 = (4)^2

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Subtracting '2' from both the sides of the equation, we get

x+2-2=16-2

x=14

Since, An extraneous solution is a solution that arises from the solving process that is not really a solution at all. But, in this equation x=14 is the solution of the given equation.

Hence, it is not an extraneous solution.

4 0
4 years ago
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meriva

Answer:

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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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