# pre cal

f as a function of x is equal to the square root of quantity 5 x plus 7, g as a function of x is equal to the square root of quantity 5 x minus 7
Find (f + g)(x)

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1. I see a lot of similar questions, with no sign of effort on them, nor feed back.

Do you have a problem working out these questions or you are just looking for someone to do your take-home test?

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2. problem working them out

need help

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posted by jorgeee
3. Could you tell me how far have you gone with this one?
Where do you get stuck?

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4. Ok - do you know what (f+g)(x) means? It is f(x)+g(x)

Now just plug in your function definitions, and simplify the result.

Just to make things easier, lose all the words. You have

f(x) = √(5x+7)
g(x) = √(5x-7)

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posted by Steve

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