Question

if root5 = 2.236 , then 1/√5​

Answer 1

Step-by-step explanation:

(√5/2)^2-10/√5+√125

=(√5)^2-20+2×√5×√125

_____________________

2√5

=5-20+2×√125×5

______________

2√5

=-15+2×√625

__________

2√5

=-15+2×25

________

2√5

=35

____

2√5

=35 ×√5

_______

2√5×√5

=35√5

______

10

=35×2.236

________

10

= 7×2.236

_______

2

= 7×1.118

=7.826

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