Tháng Năm 8, 2026

Danh mục: Hỏi Đáp

Hỏi Đáp

Tính: \(\begin{array}{l} a)\,\,\frac{x}{y}\sqrt {\frac{{{x^2}}}{{{y^4}}}} \,\,\left( {x > 0,y \ne 0} \right)\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,b)\,\,5xy\sqrt {\frac{{25{x^2}}}{{{y^6}}}} \,\,\left( {x < 0,y > 0} \right)\\ c)\,\,a{b^2}\sqrt {\frac{3}{{{a^2}{b^4}}}} \,\,\left( {a < 0} \right)\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,d)\,\,\sqrt {\frac{{9 + 12a + 4{a^2}}}{{{b^2}}}} \,\,\left( {a \ge – \frac{3}{2},\,\,\,b < 0} \right) \end{array}\) A \(\begin{array}{l} a)\,\,\frac{{{x^2}}}{{{y^3}}} & & & b)\,\, \frac{{25{x^2}}}{y}\\ c)\,\, – \sqrt 3 & & d)\,\,\frac{{3 + 2a}}{{ – b}} \end{array}\) B \(\begin{array}{l} a)\,\,\frac{{{x^2}}}{{{y^3}}} & & & b)\,\, – \frac{{25{x^2}}}{y}\\ c)\,\, – \sqrt 3 & & d)\,\,\frac{{3 + 2a}}{{ – b}} \end{array}\) C \(\begin{array}{l} a)\,\,\frac{{{x^2}}}{{{y^3}}} & & & b)\,\, – \frac{{25{x^2}}}{y}\\ c)\,\, \sqrt 3 & & d)\,\,\frac{{3 + 2a}}{{ – b}} \end{array}\) D \(\begin{array}{l} a)\,\,\frac{{{x^2}}}{{{y^3}}} & & & b)\,\, – \frac{{25{x^2}}}{y}\\ c)\,\, -\sqrt 3 & & d)\,\,\frac{{3 + 2a}}{{ b}} \end{array}\)

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Tính: \(\begin{array}{l} a)\,\,\frac{x}{y}\sqrt {\frac{{{x^2}}}{{{y^4}}}} \,\,\left( {x > 0,y \ne 0} \right)\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,b)\,\,5xy\sqrt {\frac{{25{x^2}}}{{{y^6}}}} \,\,\left( {x < 0,y > 0} \right)\\ c)\,\,a{b^2}\sqrt {\frac{3}{{{a^2}{b^4}}}} \,\,\left( {a < 0} …

Hỏi Đáp

Đưa thừa số ra ngoài dấu căn: \(a)\,\,\,\sqrt {180{x^2}} \\ b)\,\sqrt {3{x^2} – 6xy + 3{y^2}} \) A \(\begin{array}{l} a)\,\,6x\sqrt 5 \\ b)\,\,\,\left\{ \begin{array}{l} \left( {x – y} \right)\sqrt 3 \,\,\,\,khi\,\,\,\,x \ge y\\ \left( {y – x} \right)\sqrt x \,\,\,\,khi\,\,\,x < y \end{array} \right.. \end{array}\) B \(\begin{array}{l} a)\,\,\, – 6x\sqrt 5 \\ b)\,\,\left( {x – y} \right)\sqrt 3 \end{array}\) C \(\begin{array}{l} a)\,\,\left\{ \begin{array}{l} 6x\sqrt 5 \,\,\,khi\,\,\,x \ge 0\\ – 6x\sqrt 5 \,\,\,\,khi\,\,\,x < 0 \end{array} \right.\\ b)\,\,\,\left\{ \begin{array}{l} \left( {x – y} \right)\sqrt 3 \,\,\,khi\,\,\,x \ge 0\\ \left( {y – x} \right)\sqrt 3 \,\,\,khi\,\,\,x < y \end{array} \right.. \end{array}\) D \(\begin{array}{l} a)\,\, – 6x\sqrt 5 \\ b)\,\, – \left( {x – y} \right)\sqrt 3 \end{array}\)

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Đưa thừa số ra ngoài dấu căn: \(a)\,\,\,\sqrt {180{x^2}} \\ b)\,\sqrt {3{x^2} – 6xy + 3{y^2}} \) A \(\begin{array}{l} a)\,\,6x\sqrt 5 \\ b)\,\,\,\left\{ \begin{array}{l} \left( …