So Rādhārāṇī is expansion of Kṛṣṇa. Kṛṣṇa is the energetic, and Rādhārāṇī is the energy.
Śrīla Prabhupāda's lecture on Radhastami, Srimati Radharani's Appearance Day -- Montreal, August 30, 1968
The immediate expansion of Lord Kṛṣṇa is Baladeva, and Brahmā, born from the lotus flower from Garbhodakaśāyī Viṣṇu, is an expansion of Baladeva.
Śrīmad-Bhāgavatam 3.1.26, Purport (Excerpt)
