(1)/(sqrt(9)-sqrt(8))" is equal to "

sqrt(6) xx sqrt(8) is equal to

1/(sqrt9-sqrt8) is equal to

The value of 1/(sqrt(10) - sqrt(9)) - 1/(sqrt(11) - sqrt(10)) + 1/(sqrt(12) - sqrt(11)) - .... - 1/(sqrt(121) - sqrt(120)) is equal to

The value of (1)/(sqrt(10) - sqrt(9)) - (1)/(sqrt(11)-sqrt(10)) + (1)/(sqrt(12) - sqrt(11))………. - (1)/(sqrt(121) - sqrt(120)) is equal to

sqrt(6-4sqrt(3)+sqrt(16-8sqrt(3))) is equal to 1-sqrt(3) b.sqrt(3)-1 c.2(2-sqrt(3)) d.2(2+sqrt(3))