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Jika dan , maka

Jika begin mathsize 14px style straight f open parentheses straight x close parentheses equals square root of straight x squared minus 2 straight x plus 1 end root end style dan begin mathsize 14px style straight g open parentheses straight x close parentheses equals negative straight x plus 3 end style, maka undefined

  1. begin mathsize 14px style straight x minus 4 end style 

  2. begin mathsize 14px style negative straight x plus 4 end style 

  3. begin mathsize 14px style square root of straight x squared plus 4 straight x minus 4 end root end style 

  4. begin mathsize 14px style straight x plus 2 end style 

  5. begin mathsize 14px style straight x minus 2 end style 

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N. Indah

Master Teacher

Mahasiswa/Alumni Universitas Diponegoro

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Pembahasan

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses straight f ring operator straight g close parentheses open parentheses straight x close parentheses end cell equals cell straight f open parentheses straight g open parentheses straight x close parentheses close parentheses end cell row blank equals cell straight f open parentheses negative straight x plus 3 close parentheses end cell row blank equals cell square root of open parentheses negative straight x plus 3 close parentheses squared minus 2 open parentheses negative straight x plus 3 close parentheses plus 1 end root end cell row blank equals cell square root of straight x squared minus 6 straight x plus 9 plus 2 straight x minus 6 plus 1 end root end cell row blank equals cell square root of straight x squared minus 4 straight x plus 4 end root end cell row blank equals cell square root of open parentheses straight x minus 2 close parentheses squared end root end cell row blank equals cell straight x minus 2 end cell end table end style 

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