A number plus its square

How many ways to solve problems such as "a number plus its square equals 16"?

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Linda Tetlow

Topic:  Mathematics

Tags: Various topics

Optimizing the sheep pen

Discussion of seven different approaches to an optimization problem

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Topic:  Mathematics

Tags: Various topics, Circle theorems