Math, asked by Sonishka, 5 months ago

1. Is the number (9-√15)(9+ √5) rational or irrational?

Answers

Answered by adharshk31

1

Answer:

irrational number

Step-by-step explanation:

mark as barainlist answer

Answered by Anonymous

2

Answer:

( 9 - √15) ( 9 + √15 )

= ( 9)² - ( √15)²

= 81 - 15

= 66

therefore it is rational number.

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