Question

Simplify the expression
(2+√5)^2

Answer 1

Answer:

9 + 4√5

Step-by-step explanation:

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

= 2² + 2(2) (√5) + (√5)²  ( using identity )

= 4 + 4√5 + 5

= 9 + 4√5

Answer 2

Answer:

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