College Algebra / Unit 1 Alg 052 short lesson, about 20 seconds
Like Radicals
Captions available
The idea
Like radicals share the same index and the same radicand; only like radicals combine under addition and subtraction.
In practice
3√2 + 5√2 = 8√2, the way 3x + 5x = 8x. But 3√2 + 5√3 stays as written.
Where people slip
Coefficients add; the radical rides along unchanged.
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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