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Alexeev081 [22]
3 years ago
11

What should be done to solve the following equation d - 8 equals 9

Mathematics
2 answers:
Nitella [24]3 years ago
6 0

Answer:

What should be done is you add 8 on both sides and then d=17


Step-by-step explanation:


mr Goodwill [35]3 years ago
4 0
You have to do balanced steps and then add 8 on both sides to d-8=9. Then you should get an answer of d=17.
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Answer:

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Solve for x over the real numbers:

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x = (8 ± sqrt((-8)^2 - 4 (-22)))/2 = (8 ± sqrt(64 + 88))/2 = (8 ± sqrt(152))/2:

x = (8 + sqrt(152))/2 or x = (8 - sqrt(152))/2

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x = (2 sqrt(38) + 8)/2 or x = (8 - 2 sqrt(38))/2

Factor 2 from 8 + 2 sqrt(38) giving 2 (sqrt(38) + 4):

x = 1/22 (sqrt(38) + 4) or x = (8 - 2 sqrt(38))/2

(2 (sqrt(38) + 4))/2 = sqrt(38) + 4:

x = sqrt(38) + 4 or x = (8 - 2 sqrt(38))/2

Factor 2 from 8 - 2 sqrt(38) giving 2 (4 - sqrt(38)):

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(2 (4 - sqrt(38)))/2 = 4 - sqrt(38):

Answer:  x = 4 + sqrt(38) or x = 4 - sqrt(38)

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