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  • Check whether the following are quadratic equations : x^3 - 4 x^2 minus x + 1 = ( x - 2)^3

Q1.    Check whether the following are quadratic equations :

                (viii)    x^3 -4x^2 -x +1 = (x -2)^3

Answers (1)

best_answer

L.H.S. x^3 -4x^2 -x +1 , 

and R.H.S (x-2)^3 can be written as:

= x^3-6x^2+12x-8

\Rightarrow x^3-4x^2-x+1 = x^3-6x^2+12x-8

i.e., 2x^2-13x+9=0

This equation is of type: ax^2+bx+c = 0.

Hence, the given equation is a quadratic equation.

Posted by

Divya Prakash Singh

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