Mathematics
spombor2
2015-11-03 18:39:21
Find formulas for f +g, f-g, and fg
ANSWERS
Tafoni
2015-11-03 23:09:40

hello :  given : f(x) = (x-1)²   and  g(x) = 3 - x  (f+g)(x) = f(x) +g(x) = x² - 2x+1 +3-x = x² - 3x +4 (f-g)(x) = f(x) - g(x) = x² - 2x+1 - (3-x) = x² - x -2 (fg)(x) = f(x) g(x) = ( x² - 2x+1) ( 3-x) = 3x²-x^3 -6x +2x² +3 - x = -x^3+5x²-7x+3

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