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If P = 3x^(3) -5x + 9, Q = 4x^(3) + 5x^(...

If `P = 3x^(3) -5x + 9, Q = 4x^(3) + 5x^(2) -11 and R = 5x^(3) + 4x^(2) -3x +7`, then `P -2 Q + R` is

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If P= (x^4-8x)/(x^3-x^2-2x), Q= (x^2+2x+1)/(x^2-4x-5) and R=(2x^2+4x+8)/(x-5) , then (PxxQ) div R is equal to: यदि P= (x^4-8x)/(x^3-x^2-2x), Q= (x^2+2x+1)/(x^2-4x-5) तथा R=(2x^2+4x+8)/(x-5) है, तो (PxxQ) div R का मान किसके बराबर है ?