Biquadratic equation and Quadratic equation

Biquadratic equation noun - An equation of the fourth degree.

Quadratic equation and biquadratic equation are semantically related. In some cases you can use "Quadratic equation" instead a noun phrase "Biquadratic equation".

Quadratic equation noun - An equation in which the highest power of an unknown quantity is a square.

Biquadratic equation and quadratic equation are semantically related. Sometimes you can replace phrase "Biquadratic equation" with "Quadratic equation", this phrases are similar.