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Finger [1]
4 years ago
5

Which constants can be multiplied by the equations so one variable will be eliminated when the systems are added together?

Mathematics
1 answer:
nordsb [41]4 years ago
4 0
The first to solve x, because it eliminates y. Third one to solve y, because it eliminates x.
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What is the answer to this equation?<br> 1/2 (4i+8)=-2
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Answer:

If your looking for I the answer is -3

Step-by-step explanation:

Simplify both sides of the equation

1/2(4i+8)=-2       - Distribute

(1/2) (4i) + (1/2) (8) = -2

The subtract 4 from both sides

Then divide both sides by 2

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3 years ago
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How do you factor #8x^3+4x^2-18x-9#?
kvasek [131]
This expression is a good candidate for "factoring by grouping."  I note that the first 2 terms and the last 2 terms share a common factor, 2x+1:

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This can be re-written as (2x+1)(4x2-9)

The latter factor is also easily factorable:

(2x+1)(2x-3)(2x+3)  (answer)
6 0
4 years ago
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zubka84 [21]

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