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kow [346]
3 years ago
13

Given that f(x)=x^2+3x-28f(x)=x

Mathematics
1 answer:
spayn [35]3 years ago
6 0

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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