Các bạn nhớ áp dụng hằng đẳng thức số 2
<!--[if gte msEquation 12]> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style:italic;
mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style: italic;mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>A-B mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>2 mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>= mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style:italic; mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>A mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>2 mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>-2AB+ mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style:italic; mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>B mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>2<!--[endif]--><!--[if gte vml 1]--> coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe"
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height:15pt'>
o:title="" chromakey="white"/>
<!--[endif]--><!--[if gte msEquation 12]--> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style:italic;
mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style: italic;mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>A-B mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>2 mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>= mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style:italic; mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>A mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>2 mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>-2AB+ mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:"Cambria Math";mso-ansi-language:VI;font-style:italic; mso-bidi-font-style:normal'> mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>B mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-ansi-language:VI'>2<!--[endif]--><!--[if gte vml 1]--> coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe"
filled="f" stroked="f">
height:15pt'>
o:title="" chromakey="white"/>
<!--[endif]-->----- Nội dung dịch tự động từ ảnh -----
Bài 9: Thực hiện phép tính:
15)(√3-√5)² + √60