(6) `sqrt(5)x^(2)-2sqrt(2)x-2sqrt(5)=0`

x^(2)+(3-sqrt(5))x-3sqrt(5)=0

sqrt(5)x^(2)+2x-3sqrt(5)

2sqrt(3)x^(2)-5x+sqrt(3)

2sqrt(3)x^(2)+x-5sqrt(3)

The harmonic mean of the roots of the equation (5+sqrt(2))x^(2)-(4+sqrt(5))x+8+2sqrt(5)=0 is 2 b.4 c.6d.8

2sqrt(3)x^(2)+x-5sqrt(3)=0

Find the harmonic mean of the roots of the equation (5+sqrt(2))x^(2)-(4+sqrt(5))x+(8+2sqrt(5))=0

Examples based on the middle term concepts : (i)4sqrt(3)x^(2)+5x-2sqrt(3)(ii)5sqrt(5)x^(2)+30x+8sqrt(5)

f(x)=sqrt(x-4-2sqrt(x-5))