Question

Let α, β and γ be the roots of f(x) = x³ + x² - 5x - 1 = 0. Then [α] + [β] + [γ], where [.] denotes the greatest integer function, is equal to..........................

Answer 1

Ans. -1

Sum of 'r'roots of equation=coefficient of x^n-r/coefficient of x^n

Where n=highest power of variable

Here a=-1

B=1

Y=-1

Comments

The answer is -3.