Algebra › Section I · Quadratic equations and functions › Topic I.1
The square root property
The friendliest quadratic has no x-term at all - just a squared quantity equal to a number. Undoing a square takes one move, but the move has a twin clause: every positive number has two square roots, and the equation wants both.
In this topic
- The property
- Why the negative root vanishes
- The four-step routine
- Worked example: an irrational answer
- Worked example: clearing a coefficient first
- Worked example: a binomial squared
- The three outcomes
- Worked example: a geometric application
- Common mistakes to avoid
- Key takeaways
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