Math, asked by luckythegame216, 10 months ago

(3+√7) ( 3-√7) is rational or irational

Answers

Answered by shruti2099

3

Answer:

This is rational number

Answered by sift1208

2

Answer:

Rational

Step-by-step explanation:

Apply the identity

(a-b) (a+b) = a^2 - b^2

(3+√7) ( 3-√7) = (3)^2 - (√7)^2

= 9 - 7

= 2 which is rational.

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