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Answer :

Step-by-step explanation:

(f + g)(x)=

f×x + g×x =

fx + gx =

fx + gx= 3x² -x + 4 + 4x² - 5x + 2

3x² + 4x² -x - 5x + 4 + 2

=7x² - 6x + 7( I can't go past here)