Respuesta:
Explicación paso a paso:
[tex]5x^{2} -19x+12 = (5x-4)(x-3)[/tex]
[tex]-x^{2} -2x+15 = -(x^{2} +2x-15) = -(x+5)(x-3)[/tex]
entonces: [tex](5x-4)(x-3)[/tex] [tex](5x-4)[/tex] 4 - 5x
------------------------- = ------------------- = ----------------
[tex]-(x+5)(x-3)[/tex] [tex]-(x+5)[/tex] x + 5
Respuesta: ninguna es correcta
[tex] \frac{5 {x}^{2 } - 19x + 12 }{ - {x}^{2} - 2x + 15 } [/tex]
[tex] \frac{5 {x}^{2} - 4x - 15 + 12 }{ - {x}^{2} + 3x - 5x + 15} [/tex]
[tex] \frac{x \times (5x - 4) - 3(5x - 4)}{ - x \times (x - 3) - 5(x - 3)} [/tex]
[tex] \frac{(5x - 4) \times (x - 3)}{ - (x - 3) \times (x + 5)} [/tex]
[tex] \frac{(5x - 4) \times ( - 1)}{x + 5} [/tex]
[tex] - \frac{5x - 4}{x + 5} [/tex]
[tex] \frac{4 - 5x}{x + 5} [/tex]
Espero haberte ayudado :v
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Respuesta:
Explicación paso a paso:
[tex]5x^{2} -19x+12 = (5x-4)(x-3)[/tex]
[tex]-x^{2} -2x+15 = -(x^{2} +2x-15) = -(x+5)(x-3)[/tex]
entonces: [tex](5x-4)(x-3)[/tex] [tex](5x-4)[/tex] 4 - 5x
------------------------- = ------------------- = ----------------
[tex]-(x+5)(x-3)[/tex] [tex]-(x+5)[/tex] x + 5
Respuesta: ninguna es correcta
[tex] \frac{5 {x}^{2 } - 19x + 12 }{ - {x}^{2} - 2x + 15 } [/tex]
[tex] \frac{5 {x}^{2} - 4x - 15 + 12 }{ - {x}^{2} + 3x - 5x + 15} [/tex]
[tex] \frac{x \times (5x - 4) - 3(5x - 4)}{ - x \times (x - 3) - 5(x - 3)} [/tex]
[tex] \frac{(5x - 4) \times (x - 3)}{ - (x - 3) \times (x + 5)} [/tex]
[tex] \frac{(5x - 4) \times ( - 1)}{x + 5} [/tex]
[tex] - \frac{5x - 4}{x + 5} [/tex]
[tex] \frac{4 - 5x}{x + 5} [/tex]
RESPUESTA A) Ninguna es correcta
Espero haberte ayudado :v