Question

simplify (√5+√3)(√5-√3)​

Answer 1

Answer:

use (A+B)(A-B)=A^2-B^2 identity

so, √5^2 - √3^2=5-3=2

Answer 2

Answer:

2

Step-by-step explanation:

$( {a }^{2} + {b}^{2} ) = (a + b)(a - b)$

$(√5+√3)(√5-√3) = ( { \sqrt{5} }^{2} ) - ( { \sqrt{3} }^{2} )$

${ \sqrt{5 } }^{2} = 5$

${ \sqrt{3} }^{2} = 3$

$(√5+√3)(√5-√3) = 5 - 3$

$(√5+√3)(√5-√3) = 2$