$\textit{#laviken#}$
Giải thích các bước giải:
Ta có:
`M=`$x^7$ − $26x^6$ + $27x^5$ − $47x^4$ − $77x^3$ + $50x^2$ +$\text{x - 24}$
`=`$x^7$ - $25x^6$ - $x^6$ + $25x^5$ - $2x^5$ - $50x^4$ + $3x^4$ - $75x^3$ - $2x^3$ + $50x^2$ +$\text{x - 24}$
`=`$x^6$ $\text{(x - 25)}$ - $x^5$ $\text{(x - 25)}$ + $2x^4$$\text{(x - 25)}$ + $3x^3$$\text{(x - 25)}$ - $2x^2$$\text{(x - 25)}$ +$\text{x - 24}$
`=`($x^6$ - $x^5$ + $2x^4$+ $3x^3$- $2x^2$).$\text{(x - 25)}$ + $\text{x - 24}$
`=` ($25^6$ - $25^5$ + $2.25^4$+ $3.25^3$- $2.25^2$).$\text{(25 - 25)}$) + $\text{25 - 24}$
`=` ($25^6$ - $25^5$ + $2.25^4$+ $3.25^3$- $2.25^2$) . $\text{0 + 1}$
`=` $\text{0 + 1 = 1 }$
$\text{Vậy C = 1}$
