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Polinomial berikut yang benilai  untuk  adalah . . . .

Pertanyaan

Polinomial berikut yang benilai begin mathsize 14px style negative 172 end style untuk begin mathsize 14px style x equals negative 4 end style adalah . . . . 

  1. begin mathsize 14px style x cubed plus 3 x squared minus 6 x plus 8 space end style 

  2. begin mathsize 14px style x cubed plus 3 x squared plus 6 x minus 8 space end style 

  3. begin mathsize 14px style x to the power of 4 minus x cubed plus 3 x squared minus 2 x minus 8 end style 

  4. begin mathsize 14px style x to the power of 4 minus 2 x cubed minus 15 x squared plus 6 x minus 12 space end style 

  5. begin mathsize 14px style x to the power of 4 plus 4 x cubed minus 10 x squared plus 6 x plus 12 end style

Pembahasan Video:

Pembahasan Soal:

Polinomial bernilai begin mathsize 14px style negative 172 end style untuk begin mathsize 14px style x equals negative 4 end style, maka:

Pilihan A:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell x cubed plus 3 x squared minus 6 x plus 8 end cell equals cell left parenthesis negative 4 right parenthesis cubed plus 3 left parenthesis negative 4 right parenthesis squared minus 6 left parenthesis negative 4 right parenthesis plus 8 end cell row blank equals cell negative 64 plus 48 plus 24 plus 8 end cell row blank equals 16 end table end style (SALAH)

Pilihan B:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell x cubed plus 3 x squared plus 6 x minus 8 end cell equals cell open parentheses negative 4 close parentheses cubed plus 3 open parentheses negative 4 close parentheses squared plus 6 open parentheses negative 4 close parentheses minus 8 end cell row blank equals cell negative 64 plus 48 minus 24 minus 8 end cell row blank equals cell negative 48 end cell end table end style  (SALAH)

Pilihan C:

undefined (SALAH)

Pilihan D:

begin mathsize 14px style x to the power of 4 minus 2 x cubed minus 15 x squared plus 6 x minus 12 equals left parenthesis negative 4 right parenthesis to the power of 4 minus 2 left parenthesis negative 4 right parenthesis cubed minus 15 left parenthesis negative 4 right parenthesis squared plus 6 left parenthesis negative 4 right parenthesis minus 12 equals 256 plus 128 minus 240 minus 24 minus 12 equals 108 end style (SALAH)

Pilihan E:

begin mathsize 14px style x to the power of 4 plus 4 x cubed minus 10 x squared plus 6 x plus 12 equals left parenthesis negative 4 right parenthesis to the power of 4 plus 4 left parenthesis negative 4 right parenthesis cubed minus 10 left parenthesis negative 4 right parenthesis squared plus 6 left parenthesis negative 4 right parenthesis plus 12 equals 256 minus 256 minus 160 minus 24 plus 12 equals negative 172 end style (BENAR)

Jadi, jawaban yang benar adalah E.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 12 April 2021

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