The square root of -4 is: 2 i
x plus the square root of 2
9 square root 4 minus 12 square root 4 = -6
It is: (3*2)-(2*2) = 2
4 x square root of 10 minus square root of 10 = 3 x square root of 10.
?
(3 x 2) - (2 x 2) = 2
29.5
JACK
2 x 2 = 4 -2 x -2 = 4
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.
It is imaginary; we denote sqrt of -1 = i square root (-4) = ± 2i