3 years ago

Please help me 3x+y=-3

Mathematics

1 answer:

Tju [1.3M]3 years ago

6 0

Answer:

x=0 y=-3

Step-by-step explanation:

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3 years ago

Solve x2 + 2x = 4 for x by completing the square. x equals plus or minus square root of 5 plus 1 x equals plus or minus square r

steposvetlana [31]

Answer:

x equals plus or minus square root of 5 minus 1

Step-by-step explanation:

we have

$x^{2} +2x=4$

Divide by 2 the coefficient of the x-term

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squared the number

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Adds both sides

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Rewrite as perfect squares

$(x+1)^{2}=5$

take the square root both sides

$x+1=(+/-)\sqrt{5}$

$x=(+/-)\sqrt{5}-1$

therefore

x equals plus or minus square root of 5 minus 1

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3 years ago

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Answer:

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3 years ago

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Archy [21]

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Step-by-step explanation:

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Drupady [299]

No unit fractions are shown. (Sometimes editing is required when you copy and paste your question text.)

Selections B and D have 1 as their first digit. We suspect those are supposed to be the unit fractions 1/8 and 1/3, respectively.

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