Question

(2√3+√5) (2√3-√5)is rational or irrational ? justify the answer​

Answer 1

Answer:

7

Step-by-step explanation:

By using the identity (a+b)(a-b)= a²-b²

(2√3+√5) (2√3-√5)

= ( $2\sqrt{3}^{2} - \sqrt{5} ^{2}$)

= (4×3 - 5)

= (12-5)

= 7

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Answer 2

Answer:

RATIONAL NUMBER

step by step explanation

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