1. of or relating to the fourth power of a quantity; involving the fourth degree
Usage: mathematics

1. a polynomial equation or expression of the fourth degree
Usage: mathematics

Examples

• The biquadratic equation x⁴ + 2x² + 1 = 0 can be solved by substitution.
• In algebra, a biquadratic function is one where the highest power is four.
• The student learned to factor biquadratic expressions in her advanced math class.
• A biquadratic polynomial has the general form ax⁴ + bx³ + cx² + dx + e.
• The roots of a biquadratic equation can be found using various algebraic methods.