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alex41 [277]
3 years ago
14

The square of the quantity three less than a number n is seven(answer in an algebraic expression)

Mathematics
1 answer:
ira [324]3 years ago
5 0

Answer:

(n - 3)^2 = 7

Step-by-step explanation:

From the question, we understand that the number is n.

Three less than n is:

n - 3

The square is:

(n - 3)^2

The square equals 7;

So, we have:

(n - 3)^2 = 7

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Answer:

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In the diagram, line CD passes through

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Line FG also passes through

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The general solution of 2 y ln(x)y' = (y^2 + 4)/x is
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Replace y' with \dfrac{\mathrm dy}{\mathrm dx} to see that this ODE is separable:

2y\ln x\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2+4}x\implies\dfrac{2y}{y^2+4}\,\mathrm dy=\dfrac{\mathrm dx}{x\ln x}

Integrate both sides; on the left, set u=y^2+4 so that \mathrm du=2y\,\mathrm dy; on the right, set v=\ln x so that \mathrm dv=\dfrac{\mathrm dx}x. Then

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