Question

I want to solve the question

Answer 1

→Given: (3+2√2)(3-2√2)

→ To show: the given number is not an irrational number

→ solution:

using identity,

(a+b)(a-b)= a²- b² , we have,

(3+2√2)(3-2√2)= 3²-(2√2)²

= 9 - 8= 1

therefore, 1 is a rational number .

Hence proved

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