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sheila101
19.03.2020 •
Mathematics
Select the correct answer. If and , what is the domain of g(x) ÷ f(x)? A. B. C. D.
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Ответ:
Step-by-step explanation:
First we have to factor the equation:
The commom factor of first three terms and
is
. Note that ![105x=3x(35)](/tpl/images/0686/1645/1c87b.png)
In order to have two equal factors add 35 both sides:
Let's factor![(2yz+10y+7z+35)](/tpl/images/0686/1645/8b3e2.png)
Now we have:
Now it is the interesting part: You have to figure out that 3 numbers multiplied by each other will result in 847.
We have![847 = 7 \cdot 11 \cdot 11](/tpl/images/0686/1645/f1633.png)
Let's try
I will stop right here. This is not true.
Let's try then
Now let's try
Now let's try
Note that in this case I didn't considered
because it would not be an integer.
Therefore,