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Which of the following sets contain all roots of the polynomial

Which of the following sets contain all roots of the polynomial-example-1
User Sakeer
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1 Answer

4 votes

All these given roots are contained in option C.

The given equation is :


9x^(3)+9x^(2)-4x-4=0


9x^(2)(x+1)-4(x+1)=0


(9x^(2)-4)(x+1)=0


9x^(2)-4=0,x+1=0


x^(2)=(4)/(9),x=-1


x=(2)/(3),x=-1

Roots =
-1,(-2)/(3) ,(2)/(3)

Hence these lie in between
((-3)/(2) ,(3)/(2))


User Shotgun Ninja
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