If a+b+c=0, then the roots of the equation 4ax2+3bx+2x=0 are
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a
Equal
b
Imaginary
c
Real
d
None of these
answer is C.
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Detailed Solution
We have 4ax2+3bx+2x=0 Let roots are α and βLet D=B2-4 AC=9b2-4(4a)(2c)=9b2-32acGiven that, (a+b+c)=0⇒b=-(a+c)Putting this value, we get=9(a+c)2-32ac=9(a-c)2+4ac.Hence roots are real.