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If p and q are the roots of the equation x^2 + px + q =0 then, what are the values of p and q?(a) p = 1, q = -2(b) p = 0, q = 1(c) p = -2, q = 0(d) p = -2, q = 1The question was asked in quiz.The query is from Quadratic Equations topic in section Complex Numbers and Quadratic Equations of Mathematics – Class 11 |
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Answer» CORRECT choice is (a) p = 1, q = -2 The best I can explain: Since, p and q are the ROOTS of the equation x^2 + px + q =0 So, p + q = -p and pq = q So, pq = q And, q = 0 or p = 1 If, q = 0 then, p = 0 and if p = 1 then q = -2. |
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