Biquadratic Equations, Substitution

Equations in which the variable occurs only in the 2nd and 4th power, are called "biquadratic equations (bis (lat.): Twice)", because the variable is squared twice (for example ). Under this term you also sum up together all the equations, which can be converted by a suitable substitution in a quadratic equation.

The equation  e.g. leads by the substitution to the quadratic equation .

The introduction to this topic interactively using javascript programs:

Introduction

Excersises

• Click to open image! Click to open image!
•