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Dikethaui fungsi  dan . Hasil dari  adalah ...

Dikethaui fungsi begin mathsize 14px style f open parentheses x close parentheses equals square root of 2 x squared plus x plus 3 end root end style dan begin mathsize 14px style g open parentheses x close parentheses equals 4 x minus 2 end style. Hasil dari begin mathsize 14px style open parentheses f ring operator g close parentheses open parentheses 2 close parentheses end style adalah ...

Jawaban:

begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis 2 right parenthesis equals f open parentheses g open parentheses 2 close parentheses close parentheses space space space space space space space space space space space space space equals f open parentheses 4.2 minus 2 close parentheses space space space space space space space space space space space space space equals f open parentheses 6 close parentheses space space space space space space space space space space space space space equals square root of 2.6 squared plus 6 plus 3 end root space space space space space space space space space space space space space equals square root of 81 space space space space space space space space space space space space space equals 9 end style 

Jadi, begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis 2 right parenthesis equals 9 end style.

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