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patriot [66]
3 years ago
7

The sum of 2 trinomials is 7x^2 - 5x + 4. If one of the trinomials is 3x^2 + 2x - 1, then what is the other trinomial?

Mathematics
1 answer:
Hunter-Best [27]3 years ago
8 0
We can subtract the sum of the two trinomials by one of the trinomials.
(7x²-5x+4)-(3x²+2x-1)
Let's look at each part.
7x²-3x²=4x²
-5x-2x=-7x
4-(-1)=5
So, the trinomial should look like:
4x²-7x+5
So, C. 4x²-7x+5 is the other trinomial.
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Answer:

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Step-by-step explanation:

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m<EFD = 45 deg

m<EFC = 135 deg

m<FEC = 15 deg

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We now use the law of sines to find EC

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Because of the 30-60-90 triangle, ED = EC/2

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3 years ago
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Answer:

5 days

Step-by-step explanation:

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