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Question

Comment on the nature of the roots of the equation 2x26x+8=0


A

real, unequal and rational

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B

real, unequal and irrational

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C

real and equal

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D

imaginary

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Solution

The correct option is C

real and equal


Step 1:- Given: 2x26x+8=0, a=2,b=6,c=8
D=(6)24(2)(8)=3664=28. [ D=b24ac]
Step 2:- Since D<0, the roots are imaginary.


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