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`(x-2)(x-9)` का न्यूनतम मान क्या है?A. `-11/4`B. `49/4`C. `0`D. `-49/4` |
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Answer» Correct Answer - D `(x-2)(x-9)` `=x^(2)-9x-2x+8` `=x^(2)-11x+18` `=ax^(2)+bx+c=0` For minimum value `(4ac-b^(2))/(4a)` `=(4xx1xx18-(-11)^(2))/(4xx1)=(72-121)/4=(-49)/4` |
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