A pound is equal to 16 oz. What fractional part of a pound is 2 oz?
1 answer:
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Choose number 2, it is divisible by 2, 
but it is not divisible by 4, because 
but 
.
You may notice that all of the terms have a common factor: . So, let's take the
out of all the terms. This gives us:
Using the Zero Product Property, we can say that both and
.
Let's solve both. is obvious, but we still need to solve our other term:
- Set up
- Factor
- Apply the Zero Product Property
Our answer is x = -6, 0, 4.