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kaheart [24]
3 years ago
5

-x²-8x-16=0 what is the solutions by solving by quadratic equations ​

Mathematics
1 answer:
Alika [10]3 years ago
6 0

Answer:

x = - 4

Step-by-step explanation:

Given

- x² - 8x - 16 = 0 ( multiply through by - 1 to clear the leading negative )

x² + 8x + 16 = 0 ← this is a perfect square

(x + 4)² = 0 ( take the square root of both sides )

x + 4 = 0 ( subtract 4 from both sides )

x = - 4

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Answer:

Step-by-step explanation:

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Annette [7]

The solution is x=1 and y=-2

Further explanation:

Given equations are:

\frac{7}{2}x-\frac{1}{2}y=\frac{9}{2}\\3x-y=5

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Keywords: Linear equations, Solution set

Learn more about linear equations at:

  • brainly.com/question/561665
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