College Algebra / Unit 4 Alg 216 short lesson, about 20 seconds
Radical Equations
Captions available
The idea
A radical equation carries the variable inside a radical; solving isolates the radical, then raises both sides to the index's power.
In practice
√(2x + 3) = x squares into 2x + 3 = x², a quadratic in plain clothes — with a toll to pay at the end.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
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