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If length of subnormal to the curve y=x2−3x+2 at x=3 is equal to the length of subtangent to the curve y=x2+2x+a, then the number of non-negative integral value(s) of a is

Answer» If length of subnormal to the curve y=x23x+2 at x=3 is equal to the length of subtangent to the curve y=x2+2x+a, then the number of non-negative integral value(s) of a is


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