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Crank
3 years ago
11

1 point

Mathematics
2 answers:
astraxan [27]3 years ago
7 0
The answer will be 18, he started off with 18 dollars and ended with none, so if we reverse it, it’ll be 18-0=__ and 18-0=18 so the answer is 18.
Andrei [34K]3 years ago
5 0
I think the answer will be 18
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Which solution to the equation StartFraction 1 Over x minus 1 EndFraction = StartFraction x minus 2 Over 2 x squared minus 2 End
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Answer:

x = - 4

Step-by-step explanation:

Given the expression

\frac{1}{x-1} = \frac{x-2}{2x^2-2}

This can also be expressed as;

\frac{1}{x-1} = \frac{x-2}{2(x-1)(x+1)}\\1 = \frac{x-2}{2(x+1)}

Cross multiply

2(x+1) = x - 2\\2x+2 = x-2

Add 2 to both sides

2x+2+2 = x-2+2\\2x+4 = x\\2x-x = -4\\x = -4

Hence the required extraneous solution is x = -4

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eduard
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