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12.01.2021 •
Mathematics
Given that f(x) = x2 + 5x – 14 and g(x) = x + 7, find (fºg)(x) and express the result in standard form.
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Ответ:
We get![\mathbf{(fog)(x)=x^3+12x^2+21x-98}](/tpl/images/1029/9542/d5a01.png)
Step-by-step explanation:
We are given:
We need to find![(f o g)(x)](/tpl/images/1029/9542/06c99.png)
We know that:![(fog)(x)=f(x)\times g(x)](/tpl/images/1029/9542/2dbc8.png)
We multiply the both terms i.e. f(x) and g(x) to get our answer.
So, we get![\mathbf{(fog)(x)=x^3+12x^2+21x-98}](/tpl/images/1029/9542/d5a01.png)
Ответ:
B. 29.5
Step-by-step explanation:
Cos=A/H
=12/x
x=12/cos66