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Himpunan penyelesaian persamaan polinomial  adalah ....

Pertanyaan

Himpunan penyelesaian persamaan polinomial begin mathsize 14px style x cubed plus x squared minus 4 x minus 4 equals 0 end style adalah ....

  1. begin mathsize 14px style left curly bracket negative 4 comma negative 2 comma negative 1 right curly bracket end style 

  2. begin mathsize 14px style left curly bracket negative 2 comma negative 1 comma space 2 right curly bracket end style 

  3. begin mathsize 14px style left curly bracket negative 2 comma negative 1 comma space 1 right curly bracket end style 

  4. begin mathsize 14px style left curly bracket negative 2 comma space 1 comma space 2 right curly bracket end style 

  5. begin mathsize 14px style left curly bracket negative 1 comma space 1 comma space 2 right curly bracket end style 

Pembahasan Video:

Pembahasan Soal:

begin mathsize 14px style x cubed plus x squared minus 4 x minus 4 equals 0 x squared left parenthesis x plus 1 right parenthesis minus 4 left parenthesis x plus 1 right parenthesis equals 0 left parenthesis x squared minus 4 right parenthesis left parenthesis x plus 1 right parenthesis equals 0 end style

begin mathsize 14px style x squared minus 4 equals 0 end style atau begin mathsize 14px style x plus 1 equals 0 end style.

begin mathsize 14px style left parenthesis i right parenthesis space x squared minus 4 equals 0 left right double arrow x squared equals 4 left right double arrow x equals square root of 4 left right double arrow x equals plus-or-minus 2 end style

begin mathsize 14px style left parenthesis i i right parenthesis space x plus 1 equals 0 left right double arrow x equals negative 1 end style

Himpunan penyelesaian adalah begin mathsize 14px style left curly bracket negative 2 comma space minus 1 comma space 2 right curly bracket end style.

Jadi, jawaban yang paling tepat adalah B.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 12 April 2021

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