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In the quadratic formula, the minus-plus sign is used alongside the plus-minus sign to denote the opposite choice of sign for the two roots.
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In the quadratic formula, the minus-plus sign is used alongside the plus-minus sign to denote the opposite choice of sign for the two roots.
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Related words
minus-plus sign
Noun
Japanese Meaning
数学において、プラス・マイナス記号（±）と対をなす記号で、正負を逆転させる記号（∓）。つまり、(x ± 1)/(x ∓ 2) のように、プラス・マイナス記号が正の値を示す場合、対応する符号は負の値を示し、その逆を意味する。
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