Evaluate : ` 8sqrt(-8) - 2 sqrt(-1)`

Evaluate : 3sqrt(-49) -8 sqrt(-9)

Evaluate: int_(sqrt(2)-1)^(sqrt(2)+1)((x^2-1))/((x^2+1)^2)dx

If x = sqrt3/2 then find the value of (sqrt(1+x) - sqrt(1-x))/(sqrt(1+x) + sqrt(1-x))

Prove that sqrt(" "){8 sqrt3 + sqrt5 + sqrt(" ")(8 -2 sqrt15)}= 3 root(4)(3)

Prove that sqrt(98) + sqrt8 - 2 sqrt(32) = sqrt2

simplify : (a) sqrt(98) + sqrt(8) -2 sqrt(32) (b) (sqrt3 + sqrt5 + sqrt6) (sqrt3 - sqrt5 + sqrt6)

Do the sum : (i) sqrt(12) + sqrt(108) (ii)sqrt(8) + sqrt(50)

Evaluate: lim_(xto2)(sqrt(1+sqrt(2+x))-sqrt3)/(x-2)

Evaluate: int(x^3)/(sqrt(1-x^8))dx

Evaluate int sqrt(x^(2)+4x+8)dx