X2 plus x-2 equals 0

Answer 1

X squared + 4 = 0 , to solve this, you would need to carry the 4 over, so X squared = -4, then move the square over so x = +4i,-4i , because when you divide the negative, it creates a imaginary -1

Answer 2

x2 + 36x = 0

x2 = -36x

x = -36

Answer 3

x2 + x - 2 = 0 ( x + 2 )( x - 1 ) = 0 x = -2 or x = 1. Both satisfy the given equation.

Answer 4

x2 + 15x = 0

x (x + 15) = 0

x = 0

x = -15

Answer 5

X=i root3