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`C(x)=x^4(x-4)+x(x^2+7)-(x-1)(x+1)` câu hỏi 7902743 - hoidap247.com

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`C(x)=x^4(x-4)+x(x^2+7)-(x-1)(x+1)`

DuongThanhh303 · Answer

`C(x)=x^4(x-4)+x(x^2+7)-(x-1)(x+1)`
`=x^5 -4x^4 +x^3 +7x -x^2+1`
`=x^5 -4x^4 +x^3 -x^2+7x+1`

xx14456125xx · Answer

Đáp án:
 `C(x)=x^4(x-4)+x(x^2+7)-(x-1)(x+1)`
`C(x)=x^5-4x^4+x^3+7x-(x^2-1)`
`C(x)=x^5-4x^4+x^3+7x-x^2+1`
$#xx14456125xx$
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Rút gọn

`C(x)=x^4(x-4)+x(x^2+7)-(x-1)(x+1)`