Question

find the square of
3 + 2√5​

Answer 1

Answer:

29+12√5

Step-by-step explanation:

=(3 + 2√5)^2

=3^2+(2√5)^2+2(3*2√5)

=9+20+2(6√5)

=29+12√5

Hope it helps you...

Answer 2

Answer:

29 + 12√5

Step-by-step explanation:

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

[using identity (a+b)²= a²+b²+2ab]

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

$9 + 20 + 12 \sqrt{5}$

$29 + 12 \sqrt{5}$

Hope It Helps:)