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If the quadratic equations, `a x^2+2c x+b=0 and a x^2+2b x+c=0(b!=c)` have a common root, then `a+4b+4c` is equal to: a. -2 b. 2 c. 0 d. 1

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
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