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Question

Find the sum of the roots of the equation x28x+2=0.



A

-6

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B

2

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C

-8

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D

8

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Solution

The correct option is C

8


For general quadratic equation ax2+bx+c=0.
Sum of the roots =ba 
So, for the equation x28x+2=0,
Sum of the roots = (8)1=8

Sum of the roots of the equation is 8.


Mathematics

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