Relationship between Zeroes and Coefficients of a Polynomial
Say true or f...
Question
Say true or false.
If two of the zeroes of a cubic polynomial are zero, then it does not have linear and constant terms.
A
True
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B
False
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Solution
The correct option is A True True. Let the general cubic polynomial be ax3+bx2+cx+d=0 and α,β and γ are roots of the polynomial Linear term of polynomial implies to the coefficient of x, (c in the above equation), and the constant term implies to the term independent of x, (d in above equation). Given, two zeroes of the cubic polynomial are zero. Let two zeros ie.,β,γ =0.
f(x)=(x−α)(x−β)(x−γ)
f(x)=(x−α)(x−0)(x−0)
f(x)=(x−α)(x2)
(f(x)=(x3−x2α)
then the equation does not have linear term (coefficient of x is 0) and constant term.