College Algebra / Unit 1 Alg 016 short lesson, about 20 seconds
The Distributive Property
Captions available
The idea
The distributive property multiplies a factor across a sum: a(b + c) = ab + ac.
In practice
4(10 + 2) equals 4 · 10 + 4 · 2, which is 40 + 8 = 48 — the same as 4 · 12.
Where people slip
Distribution runs multiplication over addition, never addition over multiplication.
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.
Something wrong in this lesson? Flag it · Sources for College Algebra