For Exercise, simplify the functions for the following operations. Then write the domain f...

For Exercise, simplify the functions for the following operations. Then write the domain for the resulting function.

(a) (f + g)(x)

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(b) (f − g)(x)

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(c) (f · g)(x)

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(d)

f(x) = −2x + 9; g(x) = −5x − 2