Question

Si se cumple que: (x+3)(x^2-3x+9)=mx^3+n, hallar m+n

Answer 1

Respuesta:

= 27 = m + n

Explicación paso a paso:

= (x+3)(x^2-3x+9) = mx^3 + n

= x^3 - 3x^2 + 9x + 3x^2 - 9x + 27 = mx^3 + n

= x^3 + 27 = mx^3 + n

= 27 - n = mx^3 / x^3

= 27 - n = m

= 27 = m + n