A real number a is chosen randomly and uniformly from the interval [� – InterviewSolution

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1.	A real number a is chosen randomly and uniformly from the interval [−20,18]. The probability that the roots of the polynomial x4+2ax3+(2a−2)x2+(−4a+3)x−2 are all real, is given by
Answer» A real number $a$ is chosen randomly and uniformly from the interval $[- 20, 18] .$ The probability that the roots of the polynomial $x^{4} + 2 a x^{3} + (2 a - 2) x^{2} + (- 4 a + 3) x - 2$ are all real, is given by

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