Question

Решите плиз
(√5+1)^2-√20

Answer 1

5 + 2√5 + 1 - √20 =
= 6 + √(4*5) - √20 = 
= 6 + √20 - √20 = 
= 6 

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Answer 2

htib gkbp9^-2*3^-5/81*27^-3=?

Answer 3

реши плиз