College Algebra / Unit 2 Alg 115 short lesson, about 20 seconds
The Denominator-Split Error
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The idea
The denominator-split error divides across the terms of a denominator; a/(b + c) is not a/b + a/c.
In practice
12/(2 + 4) is 12/6 = 2, but 12/2 + 12/4 is 6 + 3 = 9. The split wrecked the value.
Where people slip
A summed denominator is one block; treat it whole.
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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