3 years ago

Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7

Mathematics

2 answers:

Tema [17]3 years ago

6 0

Hello,

y²+4y+4=7
==>(y+2)²-7=0
==>(y+2-√7)(y+2+√7)=0
==>y=-2+√7 or y=-2-√7

mafiozo [28]3 years ago

4 0

Hey man this is how i did it. I think it's right. Not sure

y²+4y+4=7

Then (y+2)²-7=0

Separate (y+2-√7)(y+2+√7)=0

Simplify y=-2+√7 or y=-2-√7

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What is the answer to 6(1+8n)=-39+3n

MissTica

For this case we must simplify the following expression:

$6 (1 + 8n) = - 39 + 3n$

We apply distributive property on the left side of the equation:

$6 * 1 + 6 * 8n = -39 + 3n\\6 + 48n = -39 + 3n$

We subtract 3n from both sides of the equation:

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We subtract 6 from both sides of the equation:

$45n = -39-6\\45n = -45$

We divide between 45 on both sides of the equation:

$n = \frac {-45} {45}\\n = -1$

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3 years ago

How many solutions does the equation 3x + 6 equals -1 - 3 + 4x have?

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3x + 6 = -1 - 3 + 4x
Combine like terms on the right side.

3x + 6 = -4 + 4x
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3x + 10 = 4x
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The equation has one solution (10).

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ElenaW [278]

Answer:

$41.11

Step-by-step explanation:

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Please mark brainliest and have a nice day

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Fiesta28 [93]

What’s the question

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