Question

Express 21/ 3 root 5 + root 3 with the rational denominator. { please dont refer this question to any link, solve it please }

Answer 1

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

I THINK YOU SHOULD BE ABLE TO DO THE REST

Answer 2

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

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