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Jika diketahui f ( x ) = 2 x 2 + x , maka nilai dari f ( x − 3 ) adalah...

Jika diketahui , maka nilai dari adalah...

  1. negative space 2 straight x squared space plus space 11 straight x space minus space 15

  2. negative space 2 straight x squared space minus space 11 straight x space plus space 15

  3. 2 straight x squared space plus space 11 straight x space minus space 15

  4. 2 straight x squared space minus space 11 space plus space 15

  5. 2 straight x squared space minus space 11 straight x space minus space 15

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N. Mustikowati

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

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Pembahasan

straight f left parenthesis straight x right parenthesis equals space 2 straight x squared space plus space straight x  straight f left parenthesis straight x minus 3 right parenthesis equals 2 left parenthesis straight x minus 3 right parenthesis squared space plus left parenthesis straight x minus 3 right parenthesis  equals 2 left parenthesis straight x squared minus 6 straight x plus 9 right parenthesis space plus straight x minus 3  equals 2 straight x squared minus 12 straight x plus 18 straight x minus 3  equals 2 straight x squared minus 11 straight x plus 15

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