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HImpunan space penyelesaian space dari space pertidaksamaan space straight x squared plus 4 straight x minus 5 less or equal than 0 space adalah space....

  1. open curly brackets right enclose x space minus 5 less or equal than x less or equal than negative 1 close curly brackets

  2. open curly brackets right enclose x space minus 5 less or equal than x less or equal than 1 close curly brackets

  3. open curly brackets right enclose x space minus 1 less or equal than x less or equal than 5 close curly brackets

  4. open curly brackets right enclose x space 1 less or equal than x less or equal than 5 close curly brackets

  5. open curly brackets right enclose x space space x less or equal than negative 5 space a t a u space x greater or equal than 1 close curly brackets

Jawaban:

bold Langkah bold space bold pertama bold space bold colon bold space bold Faktorkan bold space bold ruas bold space bold kiri  x squared plus 4 x minus 5 less or equal than 0  left parenthesis x minus 1 right parenthesis left parenthesis x plus 5 right parenthesis less or equal than 0    bold Langkah bold space bold kedua bold space bold colon bold thin space bold Tentukan bold space bold pembuat bold space bold nol bold space bold dari bold space bold ruas bold space bold kiri bold comma bold space bold kemudian bold space bold tempatkan bold space bold di bold space bold garis bold space bold bilangan  left parenthesis x minus 1 right parenthesis left parenthesis x plus 5 right parenthesis less or equal than 0 space  Maka space  straight x minus 1 equals 0 rightwards arrow straight x equals 1 space  straight x plus 5 equals 0 rightwards arrow straight x equals negative 5  Pada space garis space bilangan

 

Himpunan space penyelesaian space open curly brackets straight x vertical line space minus 5 less or equal than straight x less or equal than 1 close curly brackets

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