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Check Whether the Following is Quadratic Equation Or Not. (X + 2)3 = X3 − 4 - CBSE Class 10 - Mathematics

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Question

Check whether the following is quadratic equation or not.

(x + 2)3 = x3 − 4

Solution

Here it has been given that,

(x + 2)3 = x3 − 4

Now, after solving the above equation further we get,

x3 + 8 + 3(x)(2)(x + 2) = x3 - 4

12 + 6x2 + 12x = 0

x2 + 2x + 2 = 0

Now as we can see, the above equation clearly represents a quadratic equation of the form ax2 + bx + c = 0, where a = 1, b = 2 and c = 2.

Hence, the above equation is a quadratic equation.

  Is there an error in this question or solution?

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Solution Check Whether the Following is Quadratic Equation Or Not. (X + 2)3 = X3 − 4 Concept: Quadratic Equations.
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