# Easy polynomial...huh..

Algebra Level 4

consider the equation

$$\left( x-7 \right) \left( x-3 \right) \left( x+5 \right) \left( x+1 \right) =1680$$

On solving for $$x$$, If the number of real roots is $$N$$, the sum of real roots is $$S$$ and the product of real roots is $$P$$, find $$N+S+P$$

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