How to find the domain of a function

1 answer:

6 0

The space is the arrangement of all conceivable x-values which will influence the capacity "to work", and will yield genuine y-values. When finding the space, recall: The denominator (base) of a part can't be zero. The number under a square root sign must be certain in this segment.

Hope you understand!!!!!!

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What's the value of this expression ? 40-(3x2)x6

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4

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Answer:

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What is the value of a?

Sindrei [870]

Answer:

a=2

Step-by-step explanation:

Firstly, in order to simplify the expression, we should aim to combine the two terms given. In order to do this, both must have the same denominator. We can give them the same denominator by multiplying the second term $-\frac{2}{x+2}$ by $\frac{x+2}{x+2}$ . This way the fraction value remains the same but now has the same denominator as the first term:

$-\frac{2}{x+2} *\frac{x+2}{x+2} \\\\=\frac{(-2)(x+2)}{(x+2)(x+2)} \\\\=\frac{-2x-4}{(x+2)^{2}}$

From here we can now combine the two terms:

$\frac{2x+6}{(x+2)^{2}} +\frac{-2x-4}{(x+2)^{2}} \\\\= \frac{(2x+6)+(-2x-4)}{(x+2)^{2}} \\\\\\=\frac{2x+6-2x-4}{(x+2)^{2}}\\\\= \frac{2}{(x+2)^{2}}$

Therefore, a = 2.

Hope this helped!

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2 years ago