方程

gāo cì fāng chéng

高次方程

equation of higher degree

xiàn xìng fāng chéng

线性方程

linear equation

píng miàn fāng chéng

平面方程

equation of a plane

jiě fāng chéng

解方程

solve an equation

wēi fēn fāng chéng

微分方程

differential equation

jiě jué fāng chéng

解决方程

to solve an equation