hằng đẳng thức

== Vietnamese == === Etymology === Sino-Vietnamese word from 恆等式, composed of 恆 (“fixed”) and 等式 (“equality”) === Pronunciation === (Hà Nội) IPA(key): [haŋ˨˩ ʔɗaŋ˧˩ tʰɨk̚˧˦] (Huế) IPA(key): [haŋ˦˩ ʔɗaŋ˧˨ tʰɨk̚˦˧˥] (Saigon) IPA(key): [haŋ˨˩ ʔɗaŋ˨˩˦ tʰɨk̚˦˥] === Noun === hằng đẳng thức (algebra) an identity === See also === hằng số