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What will be the product of b * c if the equations x^2 + bx + c = 0 and x^2 + 3x + 3 = 0 have one common root?(a) 3(b) 4(c) 6(d) 9I had been asked this question in quiz.Question is from Quadratic Equations in division Complex Numbers and Quadratic Equations of Mathematics – Class 11

Answer»

The correct OPTION is (d) 9

The best explanation: COMPARING the coefficients of the above equation we get,

1/1 = b/3 = c/3

This means b = 3 and c = 3

Therefore, b * c = 9.



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