There are four ways to solve quadratic equations:
ð ɛ ɹ ɑ ɹ WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY w eɪ z WORD_BOUNDARY t ə WORD_BOUNDARY s ɑ l v WORD_BOUNDARY k w ɑ d ɹ æ t ɪ k WORD_BOUNDARY ɪ k w eɪ ʒ ə n z WORD_BOUNDARY