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pantera1 [17]
4 years ago
9

Solve the equation by completing the square. x^2-12=-4x

Mathematics
1 answer:
ahrayia [7]4 years ago
4 0

Step-by-step explanation:

given

{x}^{2}  - 12 =  - 4x \\  {x}^{2}  + 4x - 12 = 0 \\  {x}^{2}   + 4x + 4 - 16 = 0 \\  {(x + 2)}^{2}  = 16 \\ x + 2 = 4 \\ x = 2

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Answer:

The total length of Valerie’s walls is (2.5 × 4) + (21.25 × 3) + 32.

The total length of Seth’s walls is 3.5 + (22.75 × 2) + 58.

To find the expression for the perimeter of the house, add Valerie’s expression to Seth’s:

(2.5 × 4) + (21.25 × 3) + 32 + 3.5 + (22.75 × 2) + 58.

Step-by-step explanation:

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3 years ago
Simplify 6 - 3(4 - 3x)
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3 years ago
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garri49 [273]

Answer:y=-3

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7 0
4 years ago
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Use long division to find the quotient below.
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The length of one side of a square pond is 15 feet. The pond is surrounded by a 3 foot wide walkway. What is the total area of t
rewona [7]

Answer:

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Step-by-step explanation:

Given

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Required

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3 years ago
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