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Quantitative Aptitude :: Square Root and Cube Root - Discussion

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Choose the correct option.

In the polynomial f(x) =2*x^4 - 49*x^2 +54, what is the product of the roots, and what is the sum of the roots (Note that x^n denotes the x raised to the power n, or x multiplied by itself n times)?

A27,0

B54,2

C49/2,54

D49,27

Answer: Option (Login/Signup)

Show Explanation

The given equation is of type ax^4+bx^3+cx^2+dx+e.





Product of roots=(-1)^n*(coeff of constant term/coeff of x^4)= e/a = 54/2 =27



Sum of roots= -(coeff of x^3/coeff of x^4)= -b/a = -0/2=0

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