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If you are talking about F(x)=something then the argument is whatever value is inside the F() or F of whatever, be it x,y,5,or anything else.

Example

F(x+1) =x^2 or F of x+1 = X^2

=(x+1)^2 [substitute the argument in to the problem]

=x^2+2x+1 [simplify]

So when f(x+1) is equal to x^2, therefore the answer is x^2+2x+1.

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Josie Sporer

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