`sqrt(-5) sqrt(-16/5)=`
4
`-4`
3
2

Simplify: sqrt(-4) + sqrt(-16)- sqrt(-25)

a=9-4sqrt(5) , sqrt(a)-1/sqrt(a)=?

The equaiton of the line which bisects the obtuse angle between the lines x-2y+4=0 and 4x-3y+2=0 (A) (4-sqrt(5))x-(3-2(sqrt(5)) y+ (2-4sqrt(5))=0 (B) (3-2sqrt(5)) x- (4-sqrt(5))y+ (2+4(sqrt(5))=0 (C) (4+sqrt(5)x-(3+2(sqrt(5))y+ (2+4(sqrt(5))=0 (D) none of these

Using properties of proportion, solve for x : (i) (sqrt(x + 5) + sqrt(x - 16))/ (sqrt(x + 5) - sqrt(x - 16)) = (7)/(3) (ii) (sqrt(x + 1) + sqrt(x - 1))/ (sqrt(x + 1) - sqrt(x - 1)) = (4x -1)/(2) . (iii) (3x + sqrt(9x^(2) -5))/(3x - sqrt(9x^(2) -5)) = 5 .

Evaluate, Correct to one place to decimal, the expression 5/(sqrt(20)-sqrt(10))," if "sqrt(5)=22 and sqrt(10)=3.2

Consider the following statements : S_(1) : - 8 = 2ixx 4i = sqrt((-4)) xx sqrt((-16)) " " S_(2) : sqrt((-4) )xx sqrt((-16)) = sqrt( (-4) xx (-16)) S_(3) : sqrt((-4) xx (16) )= sqrt( -64)" " S_(4) : sqrt(64)= 8 Of these statements, the incorrect one is :

Simplify : 3sqrt(-16)-2sqrt(-9)+4sqrt(-36)

Evalutate : (4-sqrt(5))/(4+sqrt(5))+ (4+sqrt(5))/(4-sqrt(5))

Simplify each of the following : (i) 3/(5-sqrt(3))+2/(5+sqrt(3)) (ii) (4+sqrt(5))/(4-sqrt(5))+(4-sqrt(5))/(4+sqrt(5)) (iii) (sqrt(5)-2)/(sqrt(5)+2)-(sqrt(5)+2)/(sqrt(5)-2)

Simplify :- (i) (6)/(sqrt(2)) (ii) (sqrt(3))/(3) (iii) sqrt((3)/(4)) (iv) (6)/(sqrt(2)) (v) (sqrt(5))/(10) (vi) sqrt((16)/(2))