lǎo / shī / yāo / qiú / wǒ / men / jiě / chū / zhè / ge / duō / xiàng / shì / fāng / chéng / de / suǒ / yǒu / gēn老师要求我们解出这个多项式方程的所有根。The teacher asked us to find all the roots of this polynomial equation.