Question

plssss say the correct answer ​

Answer 1

Step-by-step explanation:

hey mate

(1) is correct

hope it helps you

Answer 2

Answer:

$1) 3x² + 5y² + 2 \sqrt{15}xy$

Step-by-step explanation:

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

$→( \sqrt{ {3} } ) ^{2} + (\sqrt{5} )^{2} + 2( \sqrt{3} x)( \sqrt{5}y )$

$→\bf \blue{ \boxed{3x² + 5y² + 2 \sqrt{15}xy}}$

Indentity used -

$(x + y) ^{2} = {x}^{2} + {y}^{2} + 2xy$