Đáp án: Khai căn √(ab) √(2 c √(ab)) 2 √(2c √(ab) ) d - Đáp án √(ab)√(2c√(ab))2√(2c√(ab))d=2d√(ab2c√(ab)2c√(ab))=2d√(2^2c^2abab)=2d√(2^2c^2a^2b^2)=2d2∣abc∣=4d∣abc∣

Đáp án √(ab)√(2c√(ab))2√(2c√(ab))d=2d√(ab2c√(ab)2c√(ab))=2d√(2^2c^2abab)=2d√(2^2c^2a^2b^2)=2d2∣abc∣=4d∣abc∣

Giải thích các bước giải √(ab)√(2c√(ab))2√(2c√(ab))d =√(ab)√(2c(√(ab))√(2c√(ab))2d =√(ab)2c√(ab)2d =√(ab)√(ab)2c2d =ab4cd =4abcd

btuananh245

5 tháng trước

Khai căn : `\sqrt{ab} . \sqrt{2. c . \sqrt{ab}} . 2 . \sqrt{2c . \sqrt{ab} } .d`

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toank5_pv

5 tháng trước

Đáp án:

$\sqrt{ab}.\sqrt{2.c.\sqrt{ab}}.2.\sqrt{2.c.\sqrt{ab}}.d\\=2d.\sqrt{ab.2.c.\sqrt{ab}.2.c.\sqrt{ab}}\\=2d.\sqrt{2^2.c^2.ab.ab}\\=2d.\sqrt{2^2.c^2.a^2b^2}\\=2d.2.|abc|\\=4d.|abc|$

Avi Anh

5 tháng trước

Giải thích các bước giải:

`\sqrt{ab}.\sqrt{2c\sqrt{ab}}.2.\sqrt{2c\sqrt{ab}}.d`

`=\sqrt{ab}.\sqrt{2c{\sqrt{ab}}.\sqrt{2c\sqrt{ab}}.2.d`

`=\sqrt{ab}.2c\sqrt{ab}.2d`

`=\sqrt{ab}.\sqrt{ab}.2c.2d`

`=ab.4cd`

`=4abcd`

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