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natta225 [31]
2 years ago
10

For the function f(x) = 4 – 2x + 6x^2, find and simplify the following:

Mathematics
1 answer:
laiz [17]2 years ago
8 0

Answer:

Uhh what are the answer options bc It just seems al gibberish to me

Step-by-step explanation:

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Solve the following equation simultaneously 1/x-5/y=7, 2/x+1/y=3​
maria [59]

Answer:

  (x, y) = (1/2, -1)

Step-by-step explanation:

Subtracting twice the first equation from the second gives ...

  (2/x +1/y) -2(1/x -5/y) = (3) -2(7)

  11/y = -11 . . . . simplify

  y = -1 . . . . . . . multiply by y/-11

Using the second equation, we can find x:

  2/x +1/-1 = 3

  2/x = 4 . . . . . . . add 1

  x = 1/2 . . . . . . . multiply by x/4

The solution is (x, y) = (1/2, -1).

_____

<em>Additional comment</em>

If you clear fractions by multiplying each equation by xy, the problem becomes one of solving simultaneous 2nd-degree equations. It is much easier to consider this a system of linear equations, where the variable is 1/x or 1/y. Solving for the values of those gives you the values of x and y.

A graph of the original equations gives you an extraneous solution of (x, y) = (0, 0) along with the real solution (x, y) = (0.5, -1).

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2 years ago
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Step-by-step explanation:

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2 years ago
F + 25 = 50<br><br> f = <br><br> please help
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Answer:

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2 years ago
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