等とう根こん

noun

equal roots

Mathematical term for a polynomial equation having repeated roots (multiple roots). Used in algebra and equation theory.

• この二に次じ方ほう程てい式しきは等とう根こんを持もつ。

  This quadratic equation has equal roots.

• 判はん別べつ式しきがゼロのとき、方ほう程てい式しきは等とう根こんになる。

  When the discriminant is zero, the equation has equal roots.