phân tích đa thức thành nhân tử y^2 + 3xy +2x^2 giúp mình vs

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phân tích đa thức thành nhân tử y^2 + 3xy +2x^2
giúp mình vs

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Môn Toán Nho 4 years 2020-10-13T14:51:46+00:00 2020-10-13T14:51:46+00:00 2 Answers 110 views 0

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Captcha* Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )

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Neala · Answer 1 · 2020-10-13T14:53:07+00:00

Neala

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2020-10-13T14:53:07+00:00 October 13, 2020 at 2:53 pm

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$\begin{array}{l} y^{2} + 3 x y + 2 x^{2} \\ = y^{2} + x y + 2 x y + 2 x^{2} \\ = y (y + x) + 2 x (y + x) \\ = (y + x) (y + 2 x) \end{array}$

Dau · Answer 2 · 2020-10-13T14:53:17+00:00

Dau

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2020-10-13T14:53:17+00:00 October 13, 2020 at 2:53 pm

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$y^{2} + 3 x y + 2 x^{2}$

$= y^{2} + 2 x y + x y + 2 x^{2}$

$= y (y + 2 x) + x (y + 2 x)$

$= (x + y) (y + 2 x)$