- Why zero is special
- Solving a factored equation
- A lone x is a factor too
- Zero on one side first
- When the first number is not 1
- Do not divide away a solution
- Both roots of x² = k
- Get the square alone first
- Brackets, and no real solution
- Write the equation for an area
- Falling objects and what fits
- Solving a formula for a square
- Unlocks after
- Opens up