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[" (a) "2,-4],[" The number of real root...

[" (a) "2,-4],[" The number of real roots of the equation "(x^(2)+2x)^(2)-(x+1)^(2)-55=0" is "],[[" (a) "2," (b) "1]" (c) "4quad [" (d) none of these."],[" (d) none of these."]],[[" (a) "2," (b) "1]]

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