equation
/ɪkˈweɪʒən/
a mathematical statement that two expressions are equal
中文释义：方程；等式
Solving a quadratic equation requires applying the quadratic formula correctly.
解二次方程需要正确应用求根公式。
The equation E=mc² is one of the most famous in physics.
E=mc² 是物理学中最著名的方程之一。