2 years ago

Pls help, i need help i dont understand

Mathematics

1 answer:

Svet_ta [14]2 years ago

5 0

Answer:

I think it's 140 not sure

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Given that f(x) = x2 + 8x + 15 and g(x) = x + 5, find f(x) · g(x) and express

sukhopar [10]

The result of $f(x) \times g(x)$ is $x^3 + 13x^2+ 55x+ 75$

<h3>Composite functions</h3>

Composite functions are functions that are gotten by combining multiple functions

<h3>The functions</h3>

The functions are given as:

$f(x) = x^2 + 8x + 15$

$g(x) = x+5$

To calculate f(x) * g(x), we have:

$f(x) \times g(x) = [x^2 + 8x + 15] \times [x + 5]$

Expand the above expression

$f(x) \times g(x) = x^3 + 8x^2 + 15x + 5x^2 + 40x + 75$

Collect like terms

$f(x) \times g(x) = x^3 + 8x^2 + 5x^2+ 15x + 40x + 75$

Evaluate the like terms

$f(x) \times g(x) = x^3 + 13x^2+ 55x+ 75$

Hence, the result of $f(x) \times g(x)$ is $x^3 + 13x^2+ 55x+ 75$

Read more about composite functions at:

brainly.com/question/10687170

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V=u+at<br> u= 2<br> a= -5<br> t=1/2 <br> what is the value of v

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At= -5(1/2)
at= -2.5
v= u + at
v= 2 + (-2.5)
v= -0.5

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