( 2+root 3) ( 2- root 3) is a ?
number
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Answered by
6
Hey there! Thanks for the question!
( 2 + √3 ) ( 2 - √3 )
= 2 ( 2 - √3 ) + √3 ( 2 - √3 )
= 4 - 2√3 + 2√3 - (√3)²
= 4 - 3
= 1 .
Hence, ( 2+root 3) ( 2- root 3) is a Rational number
( 2 + √3 ) ( 2 - √3 )
= 2 ( 2 - √3 ) + √3 ( 2 - √3 )
= 4 - 2√3 + 2√3 - (√3)²
= 4 - 3
= 1 .
Hence, ( 2+root 3) ( 2- root 3) is a Rational number
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Answered by
1
(2+root3)(2-root3)
=By using identity (a+b)(a-b) = a^2-b^2
= (2)^2 - (root3)^2
= 4 -3
=1
So it is a natural and rational no.
Here is ur answer dear
=By using identity (a+b)(a-b) = a^2-b^2
= (2)^2 - (root3)^2
= 4 -3
=1
So it is a natural and rational no.
Here is ur answer dear
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