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1. Let f(x)=x^2 +1 and g(x)=x-3. Write an expression for f*g(x))

 

2. Let f(x)=x^2 -2x. Find all real numbers x such that f(x)=f(f(x))

 

3. Show that when the square of an odd integer is divided by 4, the remainder is always 1. 

 Feb 20, 2021

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