[ 2 minus square root of 5 ] is the only one.
2 square root 2
The square root of -4 is: 2 i
24
Yes. For example, the conjugate of (square root of 2 + square root of 3) is (square root of 2 - square root of 3).
Yes and x = 2+square root of 6 or x = 2-square root of 6
?
Minus square root of 2, minus square root of 3, minus pi, minus e, etc. Or, to be a bit more fancy, 1 - pi, 2 - pi, 3 - pi, pi - 4, pi - 5, 2 - e, e - 3, square root of 2 minus 2, etc.
-184
It is: (3*2)-(2*2) = 2
sqrt(18) - sqrt(8) = sqrt(2)
Multiply everything by the square root of 3 minus the square root of 2 and then times that by 100 - 72 and divide that by 5