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What is Number Systems for Class IX Mathematics about?

Let x = (2 + √2) x - 2 = √2 (x - 2)2 = 2 x2 - 4x + 4 = 2 x2 - 4x + 2 = 0 This is a quadratic equation with irrational coefficient of x. Hence it will have irrational root. Therefore, (2 + √2) is irrational.

Author

Nakshatra Jain

Language

EN