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slega [8]
3 years ago
5

Need help please real fast will give brainlist

Mathematics
1 answer:
viktelen [127]3 years ago
4 0

Answer:

-2

Step-by-step explanation:

Hope it helps

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0=x^2-8x-32 solve by completing the square
Tasya [4]

Answer:

x = 4.65 or x = -0.65 (to 2 d.p)

Step-by-step explanation:

To complete the square, use the formula x² + bx + c = (x + b/2)² - (b/2)² + c

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  • This simplifies to (x - 4)² - 48 = 0

To solve this:

  • First, add 48 to both sides → (x - 4)² = 48
  • Next, square root both sides → x - 4 = ± √48 (remember that the square root of a number always has a positive and negative value)
  • Finally, add 4 to both sides → x = 4 ± √7

x has 2 solutions

x = 2 + √7 or x = 2 - √7

x = 4.65 or x = -0.65 (to 2 d.p)

Hope this helps!

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2 years ago
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