## anonymous one year ago Please help Let f(x)=2x^2+x-3 and g(x)=x-1. Perform the indicated operation, then find the domain. (F-g)(x) A. X^2-4; domain: positive real numbers B. 2x^2-4; domain: all real numbers C. X^2-4; domain: all real numbers D. 2x^2-2; domain: all real numbers

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1. anonymous

@mathmath333 @mathmate

2. mathmate

Can you do the (F-g)(x) part?

3. anonymous

No:/, that's why I posted the question on here @mathmate

4. mathmate

(f-g)(x) = f(x)-g(x) so you would subtract the polynomial g(x) from f(x).

5. mathmate

gtg. two more things that will help you: 1. Sum and difference of polynomials are polynomials. 2. All polynomials have a domain of real numbers, i.e. $$(-\infty,\infty)$$