To find f + g, add the expressions for f(x) and g(x). It's as simple as that. (2x - 3) + (x^2 - 6x).
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You know what f(x) is and you know what g(x) is. All we have to do is all them together.
2x - 3 + x^2 - 6x; rewrite
x^2 - 6x + 2x - 3; add like terms
x^2 - 4x - 3 <------------Answer
Blessings
2x - 3 + x^2 - 6x; rewrite
x^2 - 6x + 2x - 3; add like terms
x^2 - 4x - 3 <------------Answer
Blessings
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f(x) = 2x - 3
g(x) = x^2 - 6x
(f+g)(x) = x^2 - 6x + 2x - 3 = x^2 - 4x - 3
g(x) = x^2 - 6x
(f+g)(x) = x^2 - 6x + 2x - 3 = x^2 - 4x - 3