Math, asked by poojaroy63, 2 months ago

Express 21 /3 root 5 + root 3 with rational denominator.

Answers

Answered by brainlychallenger19

19

$\huge{\colorbox{pink}{ Answer }}$

21/3 ROOT5+ROOT3

=21/3 ROOT5+ROOT3*3ROOT5-ROOT3/3ROOT5-ROOT3

=21(3ROOT5-ROOT3)/(3ROOT5+ROOT3)(ROOT5-ROOT3)

=63ROOT5-21ROOT3/(3ROOT5)SQUARE-(ROOT3)SQUARE

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