anonymous
  • anonymous
Help with these f(x) functions ? (photo)?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
https://s.yimg.com/hd/answers/i/e15c3159ef9f498b80ed08cc1b1cb29c_A.png?a=answers&mr=0&x=1443817881&s=8ee7557a275544acd78d89d09f29ea3c
zepdrix
  • zepdrix
\[\large\rm \color{royalblue}{f(x)=x+7},\qquad\qquad \color{orangered}{g(x)=x-8}\]
zepdrix
  • zepdrix
Let's check out this first one :)\[\large\rm (\color{royalblue}{f}+\color{orangered}{g})(x)=\color{royalblue}{f(x)}+\color{orangered}{g(x)}\]When we plug in our functions we get,\[\large\rm \color{royalblue}{x+7}+\color{orangered}{x-8}\]And then you can simplify by combining like-terms.

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zepdrix
  • zepdrix
I know the notation can be a little hard to get used to, hopefully this makes a little sense thoguh

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