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PLEASE HELP WITH ALGEBRA QUESTIONS!!

1. What is (f+g)(x)?
f(x)=x^2-36
g(x)=x^3+2x^2-10

2. What is (f•g)(x)?
f(x)=x^4-9
g(x)=x^3+9

3. What is (f-g)(x)?
f(x)=x^3-2x^2+12x-6
g(x)=4x^2-6x+4

Respuesta :

sqdancefan
1. (f+g)(x) = f(x) +g(x)
.. = (x^2-36) +(x^3+2x^2-10)
.. = x^3 +3x^2 -46

2. (f•g)(x) = f(x)•g(x)
.. = (x^4-9)•(x^3+9)
.. = x^7 +9x^4 -9x^3 -81

3. (f-g)(x) = f(x) -g(x)
.. = (x^3-2x^2+12x-6) -(4x^2-6x+4)
.. = x^3 -6x^2 +18x -10

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