(√5/√5-2-5/2+√5)(5+√5)

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вопрос

Let's simplify the expression step by step.

First, let's simplify the expression inside the parentheses:
(√5/√5-2-5/2+√5) = (1-2-2.5+√5) = (-3.5+√5)

Now, let's multiply this result by (5+√5):
(-3.5+√5)(5+√5) = -3.5(5) - 3.5(√5) + √5(5) + √5(√5)
= -17.5 - 3.5√5 + 5√5 + 5
= -12.5 + 1.5√5

Therefore, the final answer is -12.5 + 1.5√5.