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Equation
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x² + 4x = 0

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Add a constant
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x² + 4x + (4/2)² - (4/2)² = 0 ← Add 2² to form perfect square

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Evaluate bracket
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x² + 4x + 2² - 2² = 0

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Form the perfect square
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(x + 2)² = 4

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Square root both sides
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(x+2) = $\pm$ √4

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Evaluate the square root
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(x+2) = $\pm$ 2

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Solve x
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x = 2 - 2 or x = -2 - 2

x = 0 or -4

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Answer: The constant to add is 4 and the value of x = 0 or -4
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7 0

4 years ago

How do I order 4 pi and the square root of 8 from greatest to least

vlada-n [284]

$4\pi = 3.14 \times 4 = 12.56 \\ \sqrt{8 } = 2.82$

5 0

3 years ago

Is 34.653 greater than, less than, or equal to 3.4653

ValentinkaMS [17]

34.653 is greater than 3.4653 because it’s a double digit in the beginning 34 and the other number 3.4653 is a one digit 3

3 0

3 years ago

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