Question

Expand: (2 + √5)²
Pls answer fast....

Answer 1

(2)^2 + (√5)^2 +2*2*√5

4+5+4√5

9+4√5

Answer 2

Question :-

Expand :- (2 + √5)²

Answer :-

(2 + √5)²

= 2² + 2.2.√5 + (√5)²

= 4 + 4√5 + 5

= 9 + 4√5

Formula :-

(a + b)² = a² + 2ab + b²

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