4Squareroot 4 Squareroot 182i Squareroot 6 Squareroot 60Squa

4/Squareroot -4 Squareroot 18/2i Squareroot 6 Squareroot 60/Squareroot -15 -Squareroot 12/Squareroot -18

Solution

26) 4/sqrt(-4)

= 4/2*sqrt(-1)

we know sqrt(-1) = i

So, 2/i    now rationalize denominator:

2*i/i*i = -2i

27)    sqrt(18)/2isqrt(6)

= sqrt(18/6)/2i

= sqrt(3)/2i

rationalize denominator :

= sqrt(3)*i/2i*i

= - i*sqrt(3)/2

29) sqrt(60)/sqrt(-15)

= sqrt(60/15)/sqrt(-1)

= 2/i

= 2i/i*i = -2i