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Toán Lớp 8: x^5 – 3x^4 + 3x^3 – x^2 2x^2 – 7x -9 8x^3 – 12x^2y + 6xy^2 – y^3

Home/ Toán Lớp 8: x^5 – 3x^4 + 3x^3 – x^2 2x^2 – 7x -9 8x^3 – 12x^2y + 6xy^2 – y^3

Toán Lớp 8: x^5 – 3x^4 + 3x^3 – x^2 2x^2 – 7x -9 8x^3 – 12x^2y + 6xy^2 – y^3

Tâm Tháng Mười 4, 2022 Toán học 1 Comment 0 views

Toán Lớp 8: x^5 – 3x^4 + 3x^3 – x^2
2x^2 – 7x -9
8x^3 – 12x^2y + 6xy^2 – y^3

Comments ( 1 )

maianhnhiquynh
4 Tháng Mười, 2022 at 4:39 chiều

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$a)\text{ }x^5-3x^4+3x^3-x^2=x^2.\left(x^3-3x^2+3x-1\right)=x^2.\left(x-3\right)^3$

$\text{b) }2x^2-7x-9=2x^2-9x+2x-9=\left(2x^2-9x\right)+\left(2x-9\right)=x.\left(2x-9\right)+\left(2x-9\right)=\left(2x-9\right).\left(x+1\right)$

$\text{c) }8x^3-12x^2y+6xy^2-y^3=\left(2x-y\right)^3$

$\text{Xin câu trả lời hay nhất nhé!!!}$

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