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  4. Which of the following quantities are irrational for the quadratic equation ( log 10 x) x2-( log 10 5) x=2( log 2 10)-1-x ?

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Q. Which of the following quantities are irrational for the quadratic equation $\left(\log _{10} x\right) x^2-\left(\log _{10} 5\right) x=2\left(\log _2 10\right)^{-1}-x$ ?

Complex Numbers and Quadratic Equations

Solution:

Correct answer is (c) sum of coefficientsCorrect answer is (d) discriminant