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melissaschnelting
10.03.2020 •
Mathematics
Given f(x)=3x^2+9x and g(x)=x^2-x-12, find (f/g)(x).
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Ответ:
Step-by-step explanation:
We have,
and
. We need to find ![\frac{f}{g} (x) = \frac{f(x)}{g(x)}](/tpl/images/0541/3486/112de.png)
⇒![\frac{f}{g} (x) = \frac{f(x)}{g(x)}](/tpl/images/0541/3486/112de.png)
⇒![\frac{f(x)}{g(x)} = \frac{3x^{2}+9x}{x^{2}-x-12}](/tpl/images/0541/3486/d16a4.png)
⇒![\frac{f(x)}{g(x)} = \frac{3x^{2}+9x}{(x+3)(x-4)}](/tpl/images/0541/3486/4f1f7.png)
⇒![\frac{f(x)}{g(x)} = \frac{3x(x+3)}{(x+3)(x-4)}](/tpl/images/0541/3486/699bf.png)
⇒![\frac{f(x)}{g(x)} = \frac{3x}{(x-4)}](/tpl/images/0541/3486/3aff6.png)
⇒![\frac{f(x)}{g(x)} = 3\frac{x}{(x-4)}](/tpl/images/0541/3486/b11d0.png)
⇒![\frac{f}{g}(x) = 3\frac{x}{(x-4)}](/tpl/images/0541/3486/3920f.png)
Hence ,
.
Ответ: