document.write( "Question 940090: for the indicated functions f and g, find the
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document.write( "functions f + g, f - g, fg, and f|g, and find their domains.
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document.write( "f(x)= 3x + 5; g(x)= x^2 - 1
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Algebra.Com's Answer #572930 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! Note: domain of a Polynomial function is ALL real numbers. \n" ); document.write( "Exs: ax + b, ax^2 + bx + c, ax^3 + bx^2 + cx + d , etc \n" ); document.write( ".... \n" ); document.write( "f(x)= 3x + 5; g(x)= x^2 - 1 \n" ); document.write( "f + g, x^2+3x+4 (Polynomial), domain is ALL real numbers (− ∞, ∞) \n" ); document.write( "f - g, -x^2 + 3x + 6 (Polynomial), domain is ALL real numbers (−∞, ∞) \n" ); document.write( "fg, 3x^2 + 8x^2 -1(Polynomial), domain is ALL real numbers (−∞, ∞) \n" ); document.write( "..... \n" ); document.write( "f/g, (3x+5)/(x^2-1), domain is ALL real numbers EXCEPT x = ± 1 , (−∞, -1) ∪ (−1, 1)∪ (1, ∞) \n" ); document.write( "CANNOT Divide by Zero \n" ); document.write( " |