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postnew [5]
3 years ago
7

How do extraneous solutions arise from radical equations?

Mathematics
1 answer:
AnnyKZ [126]3 years ago
5 0
You get extraneous solutions anytime the radical becomes undefined under the set of real numbers.  for example \sqrt{-1} does not exsist since the radical cannot be used on a negative number
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The width of a rectangle is 4 feet shorter than its length. The area of the rectangle is 42 ft.². Find the length and width. Rou
navik [9.2K]

Answer:

Length ≈ 20 feet (rounded down nearest 10th feet)

Width ≈ 20 feet (rounded up to nearest 10th feet)

Step-by-step explanation:

Find Length and Width

Width = Length - 4 feet

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Area = L x W

42 = L x (L - 4)

42 = 2L - 4

42 + 4 = 2L - 4 + 4

2L = 46

2L/2 = 46/2

L = 23

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Width = 23 - 4

Width = 19 feet

Width ≈ 20 feet

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3 years ago
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Mkey [24]

Answer:

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Step-by-step explanation:

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Misha Larkins [42]

Answer:

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Dominik [7]

Answer:

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