Asked by lexi
find (FxG)(X) and (GxF)(X) when f(x)=5x^2-1 and g(x)=2/x
Answers
Answered by
Sally's friend
f(g(x))=5(2/x)^2-1 put g in for x
=5(4/x)-1 Exponents
=(20/x)-1 This is it or get
= (20/x)-(x/x) LCD
= (20-x)/x
Solution: (20/x)-1 OR (20-x)/x
g(f(x))=2/(5x^2-1) put f in for g
This is simplified
=5(4/x)-1 Exponents
=(20/x)-1 This is it or get
= (20/x)-(x/x) LCD
= (20-x)/x
Solution: (20/x)-1 OR (20-x)/x
g(f(x))=2/(5x^2-1) put f in for g
This is simplified
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