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If f(x)=x^(3)-12x+p,p in {1,2,3,…,15} an...

If `f(x)=x^(3)-12x+p,p in {1,2,3,…,15}` and for each 'p', the number of real roots of equation f(x)=0 is denoted by `theta`, the `1/5 sum theta` is equal to ……….. .

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