Question
If `sqrt(5)` = 2.236, then the value of `sqrt(5)/2 - 10/sqrt(5) + sqrt(125)` is equal to
Answer: Option B
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`sqrt(5)/2 - 10/sqrt(5) + sqrt(125)` = `(sqrt(5)^2 - 20 + 2sqrt(5) xx 5sqrt(5))/(2sqrt(5))`
= `(5 - 20 + 50)/(2sqrt(5))` = `(35)/(2sqrt(5))`
= `(35)/(2sqrt(5))` x `sqrt(5)/sqrt(5)` = `(35sqrt(5))/(10)`
= `7/2` x 2.236 = 7 x 1.118 = 7.826
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