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Solve the equation by using formula x^(...

Solve the equation by using formula ` x^(2) - 8x+ 1=0 ` .

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The correct Answer is:
` x= 4 + sqrt( 15) ,4 - sqrt( 15)`
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OSWAAL PUBLICATION-QUADRATIC EQUATIONS -TOPIC -1 ROOTS OF THE EQUATIONS ( LONG ANSWER TYPE QUESTION -I )
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  10. Solve the equation by using formula x^(2) - 8x+ 1=0 .

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