How do you determine #h(x)=f(x)g(x)# and #k(x)=f(x)/g(x)# given #f(x)=x+7# and #g(x)=x-7#?
1 Answer
Dec 26, 2017
# h(x) = x^2-49 #
# k(x) = (x+7) / (x-7) #
Explanation:
We have:
# f(x)= x+7 #
# g(x)= x-7 #
And so:
# h(x) = f(x)g(x) #
# \ \ \ \ \ \ \ = (x+7)(x-7) #
# \ \ \ \ \ \ \ = x^2-49 #
And:
# k(x) = f(x)/g(x) #
# \ \ \ \ \ \ \ = (x+7) / (x-7) #
