Question

(3-√5)(3+√5) pls answer​

Answer 1

Answer:

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Answer 2

(3-√5)(3+√5)
Using the Identity,
(a+b)(a-b) = a^2- b^3
= (3)^2 - (√5)^2
= (3*3) - (√5*√5)
= 9 - 5
= 4

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