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Nookie1986 [14]
2 years ago
7

Simplify it.2(3-4y)​

Mathematics
2 answers:
Wittaler [7]2 years ago
6 0

Answer:

8y

Step-by-step explanation:

Tcecarenko [31]2 years ago
5 0

Answer:

6-8y why it needs 20

Step-by-step explanation:

2*3=6

2*-4y=-8y

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Remember that <span>an extraneous solution of an equation, is the solution that emerges from solving the equation but is not a valid solution.
 
Lets solve our equation to find out what is the extraneous solution:
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(\sqrt{x-3})^2 =(x-5)^2
x-3=x^2-10x+25
x^2-11x+28=0
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x=4 and x=7
<span>
So, the solutions of our equation are </span>x=4 and x=7. Lets replace each solution in our original equation to check if they are valid solutions:
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\sqrt{7-3} =7-5
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We can conclude that 7 is a valid solution of the equation.

- For x=4
\sqrt{x-3} =x-5
\sqrt{4-3} =4-5
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We can conclude that 4 is not a valid solution of the equation; therefore, 4 is a extraneous solution.

We can conclude that the correct answer is: <span>D. the extraneous solution is x = 4</span>
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