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cristinanina
25.12.2019 •
Mathematics
Given f(x)=2x2−5x−3 and g(x)=2x2+x .
what is (fg)(x) ?
−2x−3x where x≠0, −12
x−3x where x≠0, −12
x−2x−3 where x≠0, −32
xx−3 where x≠0, 3
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Ответ:
For (fg)(x)
(fg) (x) = 4x^4 - 8x^3 -11x^2 -3x
With no restrictions on the x
Step-by-step explanation:
To find (fg) (x) = f(x) . g(x)
We need to multiply f(x) with g(x)
(fg) (x) = (2x^2 -5x -3) * (2x^2 + x)
fg(x) = 4x^4 + 2x^3 - 10x^3 - 5x^2 -6x^2 -3x
fg(x) = 4x^4 - 8x^3 -11x^2 -3x
Ответ:
(fg)(x) =
is the answer.
Step-by-step explanation:
It is given f(x) = 2x² - 5x -3 and g(x) = 2x² + x
Then we have to find (fg)(x)
As we know (fg)(x) = f(x).g(x)
By putting the values of f(x) and g(x)
(fg)(x) = (2x² - 5x - 3)(2x²+x)
= 2x²(2x²+x) - 5x(2x² + x) - 3(2x² + x)
=![4x^{4}+2x^{3}-10x^{3}-5x^{2}-6x^{2}-3x](/tpl/images/0432/8280/24f99.png)
=![4x^{4}-8x^{3}-11x^{2}-3x](/tpl/images/0432/8280/125e6.png)
So the value of (fg)(x) =
is the answer.
Ответ:
9.03795768
Step-by-step explanation:
Hope this helped.