Question

help me dear guys it's maths
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Answer 1

Answer:

25 ($\sqrt{5}$ - 1)

Step-by-step explanation:

5$\sqrt{5}$ ( 5 - $\sqrt{5}$)

= 25$\sqrt{5}$ - 5($\sqrt{5}$ × $\sqrt{5}$)

= 25$\sqrt{5}$ - (5 × 5)

= 25$\sqrt{5}$ - 25

=25 ($\sqrt{5}$ - 1)