Question

simplify each of the following expression (5+2√6)² ​

Answer 1

Answer:

49+20√6

Step-by-step explanation:

(a+b)²=a²+2ab+b²

(5+2√6)²=5²+2×5×2√6+(2√6)²

=25+20√6+4×6

=20√6+25+24

=20√6+49

Answer 2

Answer:

20√6+49.

Step-by-step explanation:

(5+2√6)²

using (a+b) ² identity, we get

Here a=5 and b=2√6

(a+b)²=a²+2×a×b+b²

=5²+2×5×2√6+(2√6)²

=25+20√6+4×6

=25+20√6+4×6

=25+24+20√6

=20√6+49.