krwilliams1003 krwilliams1003

03-05-2021
Mathematics

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Given that f(x)=x^2+3x-28f(x)=x
2
+3x−28 and g(x)=x+7g(x)=x+7, find f(x)+g(x)f(x)+g(x) and express the result in standard form.

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sqdancefan sqdancefan

03-05-2021

9514 1404 393

Answer:

x^2 +4x -21

Step-by-step explanation:

Substitute the given expressions and simplify.

f(x) + g(x)

= (x^2 +3x -28) +(x +7)

= x^2 +(3+1)x +(-28 +7)

= x^2 +4x -21

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