There are infininte combinations. One condition must be true though: x is the opposite of y (x is the negative of y) or vice versa.
(0, -14)
x2 + 49 = 0 ∴ x2 = -49 ∴ x = 7i
It is x = -5
x = 0 or x = 2
True because in both equations x = 0 or x = -4
(0, -14)
x2 + 49 = 0 ∴ x2 = -49 ∴ x = 7i
They are: x = 5/3 and x = -3
It is: x = 5/3 and x = -3
a = [ 0, 4 ]
x = 0
It is x = -5
x-2y=0 x=2y The solution set is the set of all (x,y) such that x=2y
x = 0 or x = 2
True because in both equations x = 0 or x = -4
'x' must be zero, so the solution set is [ 0 ].
2x2+5x-3 = 0 (2x-1)(x+3) = 0 x = 1/2 or x -3