For what values of a does the equation (a^2 + 2a)x^2 + (3a - 2)x+1 = 0 yield no real solutions x? Express your answer in interval notation.
"For what values of a does the equation (a^2 + 2a)x^2 + (3a - 2)x+1 = 0 yield no real solutions x?".
