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Mr. Fair has ordered new chairs for the school gym. He ordered a total of 84 chairs for family and guests to sit in. If he arranges the chairs in one large square, how many chairs will not...

Sir,please answer how to solve 'Let Pn(x) = 1 + 2x + 3x2 + ...... + (n + 1) xn be a polynomial such that n is even. Then Calculate  the number of real roots of P(x) =...

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