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(07.02 MC)Given the polynomial 3x3 − 4x2 + 9x − 12, rewrite the polynomial as a product of binomials. (x2 + 3)(3x + 4) (x2 + 3)(3x − 4) (x2 − 3)(3x + 4) (x2 − 3)(3x − 4)

Question

(07.02 MC)Given the polynomial 3x3 − 4x2 + 9x − 12, rewrite the polynomial as a product of binomials. (x2 + 3)(3x + 4) (x2 + 3)(3x − 4) (x2 − 3)(3x + 4) (x2 − 3)(3x − 4)

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Solution

Para reescribir el polinomio 3x34x2+9x123x^3 - 4x^2 + 9x - 12 como un producto de binomios, sigamos estos pasos:

  1. Identificar los posibles factores: Observamos las opciones dadas:

    • (x2+3)(3x+4)(x^2 + 3)(3x + 4)
    • (x2+3)(3x4)(x^2 + 3)(3x - 4)
    • (x23)(3x+4)(x^2 - 3)(3x + 4)
    • (x23)(3x4)(x^2 - 3)(3x - 4)
  2. Multiplicar cada opción: Multiplicamos cada par de binomios para ver cuál coincide con el polinomio original.

    • (x2+3)(3x+4)(x^2 + 3)(3x + 4): (x2+3)(3x+4)=x2(3x+4)+3(3x+4)=3x3+4x2+9x+12 (x^2 + 3)(3x + 4) = x^2(3x + 4) + 3(3x + 4) = 3x^3 + 4x^2 + 9x + 12 Esto no coincide con 3x34x2+9x123x^3 - 4x^2 + 9x - 12.

    • (x2+3)(3x4)(x^2 + 3)(3x - 4): (x2+3)(3x4)=x2(3x4)+3(3x4)=3x34x2+9x12 (x^2 + 3)(3x - 4) = x^2(3x - 4) + 3(3x - 4) = 3x^3 - 4x^2 + 9x - 12 Esto coincide con 3x34x2+9x123x^3 - 4x^2 + 9x - 12.

    • (x23)(3x+4)(x^2 - 3)(3x + 4): (x23)(3x+4)=x2(3x+4)3(3x+4)=3x3+4x29x12 (x^2 - 3)(3x + 4) = x^2(3x + 4) - 3(3x + 4) = 3x^3 + 4x^2 - 9x - 12 Esto no coincide con 3x34x2+9x123x^3 - 4x^2 + 9x - 12.

    • (x23)(3x4)(x^2 - 3)(3x - 4): (x23)(3x4)=x2(3x4)3(3x4)=3x34x29x+12 (x^2 - 3)(3x - 4) = x^2(3x - 4) - 3(3x - 4) = 3x^3 - 4x^2 - 9x + 12 Esto no coincide con 3x34x2+9x123x^3 - 4x^2 + 9x - 12.

  3. Conclusión: La opción correcta es (x2+3)(3x4)(x^2 + 3)(3x - 4).

This problem has been solved

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