Question

find the square of
3 + 2√5​

Answer 1

Step-by-step explanation:

squre of 3 + 2√5

(3 + 2√5)²

= 3²+2×3×2√5+(2√5)²

=9+12√5+20

=29+12√5

Answer 2

Answer:

55.83(approx) or 29+12√5

Step-by-step explanation:

(3+2√5)² = (3)² + (2√5)² + 2x3x2√5 = 9 + (4x5) + 12√5 = 9+20+26.83 = 55.83(approx) or 29+12√5