# Solve where πΒ² + πΒ² = π and π + π = π (substituting)

Solve simultaneous equations by substituting a linear equation into a quadratic equation. You need to be confident in solving quadratics by factorisation and by the quadratic formula before starting this lesson. Examples include quadratics of the form πΒ² + πΒ² = π, where r can be a square number.

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

- Click "Close Video"
- Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the βResume Videoβ icon. Once you have finished all the tasks, click βNextβ below.

# Final Quiz

This quiz is a great way for you to test your learning from this lesson.

If you would like to re-cap any of the lesson, or repeat any exercise, click βBackβ below.