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Method of undetermined coefficients for PreRMO, PRMO and IITJEE Foundation maths
Find out when the expression $latex x^{3}+px^{2}+qx+r$ is exactly divisible by $latex x^{2}+ax+b$ Solution 1: Let $latex x^{3}+px^{2}+qx+r=(x^{2}+ax+b)(Ax+B)$ where A and B are to be determined in …