Proof WritingMediumExistence, Uniqueness and Counterexamples ShareExistence, Uniqueness and Counterexamples · Medium problemIn which set does the equation x2=9x^2 = 9x2=9 have EXACTLY one solution?Athe real numbersBthe integersCthe non-zero integersDthe positive real numbersCheck Show answer Walk through it step by step Practice more like this Review this concept