Question

(√3 + √5)(√3 - √5) =

Answer 1

Answer:

=(√3 + √5)(√3 - √5)

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

= 3 - 5

= -2

that's the answer

Answer 2

Answer:

Using the identity:-

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

So,

$( \sqrt{3} + \sqrt{5} )( \sqrt{3} - \sqrt{5} )$

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

$(3 - 5)$

$= - 2$

Step-by-step explanation:

$\huge\color{red}hope \: helps$