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यदि `x+1/(9x)=4` हो तो `9x^(2)+1/(9x^(2))` का मान क्या होगा?A. 140B. 142C. 144D. 146 |
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Answer» Correct Answer - B `x+1/(9x)=4` Multiply by 3 both side `3x+1/(3x)=12` squaring both side `9x^(2)+1/(9x^(2))+2xx3xx x1/(3x)=144` `9x^(2)+1/(9x^(2))+2=144` `9x^(2)+1/(9x^(2))=142` |
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