Question

(2+root2)(2-root2) is rational or irrational if you don't know please don't answer others wise i will report the answer it's very important i need with sum​

Answer 1

Answer:

$(2 + \sqrt{2} )(2 - \sqrt{2}) \\ = {2}^{2} - { \sqrt{2} }^{2} \\ = 4 - 2 = 2$

Step-by-step explanation:

2 is completely rational.

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