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Pertanyaan

Jika g left parenthesis straight x right parenthesis space equals space 3 straight x minus 2, maka nilai dari space left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis squared space minus space straight g left parenthesis straight x squared right parenthesis plus space 7 left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis adalah...

  1. negative space 6 x squared space plus space 9 x space minus space 8

  2. negative space 6 x squared space minus space 9 x space plus space 8

  3. 6 x squared space minus space 9 x space plus space 8

  4. 6 x squared space minus space 9 x space plus space 8

  5. 6 x squared space plus space 9 x space minus space 8

N. Mustikowati

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

straight g left parenthesis straight x right parenthesis space equals space 3 straight x space minus space 2  left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis squared space equals left parenthesis 3 straight x space minus space 2 right parenthesis squared  equals space left parenthesis 3 straight x space minus space 2 space right parenthesis left parenthesis 3 straight x space minus space 2 right parenthesis  equals space 9 straight x squared space minus space 6 straight x space minus space 6 straight x plus 4 space  equals space 9 straight x squared space minus space 12 straight x space plus space 4  straight g left parenthesis straight x right parenthesis squared space equals space 3 straight x squared space minus space 2  7 left parenthesis space straight g left parenthesis straight x right parenthesis right parenthesis space equals space 7 left parenthesis space 3 straight x space minus space 2 right parenthesis space  equals space 21 straight x space minus space 14    left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis squared minus space straight g left parenthesis straight x right parenthesis squared space plus space 7 left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis  equals space 9 straight x squared space minus space 12 straight x plus 4 space minus space 3 straight x squared space plus space 2 plus space 21 straight x space minus space 14  equals space 6 straight x squared space plus 9 straight x space minus space 8

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