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Musya8 [376]
4 years ago
5

40 pts! solve the following equation by completing the square. 4x^2 - 16x + 8 = 0

Mathematics
2 answers:
sergij07 [2.7K]4 years ago
4 0

Answer:

B

Step-by-Step

sammy [17]4 years ago
3 0

Step-by-step explanation:

4 {x}^{2}  - 16x + 8 = 0 \\  {(2x)}^{2}  - 2.2x.4 +  {4}^{2}  - 8  = 0 \\  {(2x - 4)}^{2}  - 8 = 0 \\ 2x - 4 =   \sqrt{8}  \:  -  \sqrt{8}  \\ x = 2 +  \sqrt{2}  \\ x = 2 -  \sqrt{2}

..............................................

Plzz mark it as a brilliant answer

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jenyasd209 [6]

Answer:

Step-by-step explanation:

F(x) results in a parabola with vertex (0,0) wich mean there is only one x-int at that point. g(x) has been shifted the grapgh of f(x) to the right by to units and down by three unites. Now our vertex lies in the point (2,-3) and since the graph was move dow i=of the x-axis we now have two different x-intercepts.

7 0
3 years ago
Is the following relation a function? Two circles are shown, one labeled x and the other labeled y. The x circle contains the nu
Allushta [10]

Answer:

i  believe that it is a function.

Step-by-step explanation:

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5 0
3 years ago
Plsss help I can mark you brainliest
Galina-37 [17]

Answer:

The answer is B.

Step-by-step explanation:

12 ≤ r + 22

r + 22 ≥ 12

r + 22 − 22 ≥ 12 − 22

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I hope this helps you :D

4 0
3 years ago
22 Evaluate the expression for x = 2
jekas [21]

Answer:

22. 18

23. 10

Step-by-step explanation:

22

  • you plug the number for the variable into the equation (3(2)²+6
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  • finally you add 12+6=18

23

  • plug in the number for the variable so 5–(-5)
  • so a negative and a minus will make it addition (negative + negative = positive)
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4 0
4 years ago
Please help! And please show work.
Iteru [2.4K]
This answer would be D because an equilateral triangles angles are all the same
7 0
3 years ago
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