Question

(2-root3)(2+root3) is rational, irrational​

Answer 1

$\huge1$

Step-by-step explanation:

$(2 - \sqrt{3} )(2 + \sqrt{3} )$

$\red\implies$$( {(2)}^{2} - {( \sqrt{3} )}^{2} ). . . .((a-b)(a+b)= a^2- b^2 )$

$\red\implies$$(4 - 3)$

$\red\implies$1

$\therefore$ It is rational :)