def test_solve_equation():
assert solve_equation(1, 1, 1) == {}
assert solve_equation(2, 4, -2.5) == {-2.5, 0.5}
assert solve_equation(0, 1, 1) == {-1}
def test_solve_equation3():
assert [0, -9] == solve_equation(1, 9, 0)
def test_solve_equation4():
assert [1, 3] == solve_equation(2, -8, 6)
def test_solve_equation1():
assert [] == solve_equation(2, 0, 8)
def test_solve_equation2():
assert [3, -3] == solve_equation(1, 0, -9)
def test_solve_equation4():
assert solve_equation(2, -3, 1) == [2.0, 0.0]
def test_solve_equation():
assert [0] == solve_equation(2, 0, 0)
def test_solve_equation3():
assert solve_equation(1, -6, 5) == [5.0, 1.0]
def test_solve_equation1():
assert solve_equation(1, 0, 0) == [0.0, 0.0]
def test_solve_equation():
assert solve_equation(2, 3, 1) == -0.5
def test_solve_equation_2():
x1, x2 = solve_equation(1, -3, -4)
assert_equation(x1, x2, 4)
assert_equation(x1, x2, -1)
def test_solve_equation():
x1, x2 = solve_equation(1, 4, 4)
assert_equation(x1, x2, -2)
