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saveliy_v [14]
1 year ago
9

Solve the quadratic equation by completing the square. x²+18x+79=0

Mathematics
1 answer:
pogonyaev1 year ago
8 0

x^2 + 18x=-79 \\ \\ x^2 + 18x+81=2 \\ \\ \boxed{(x+9)^2=2} \\ \\ x+9=\pm \sqrt 2 \\ \\ x=-9 \pm \sqrt{2} \\ \\ \boxed{x=-9+\sqrt{2}, -9-\sqrt{2}}

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2 years ago
Complete the two-column proof.
GuDViN [60]

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3 0
3 years ago
Please help me with this!
stich3 [128]

Answer:

y = x^2 - 4x - 6.

Step-by-step explanation:

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(x -  (2 + √10))(x - (2 - √10))

= ( x -  2 - √10)(x - 2 + √10)

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7 0
3 years ago
A model rocket is built to the scale 1:20, or 1 inch - 20 feet. The actual rocket is 4440 feet
tester [92]
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Hope this helped!
8 0
2 years ago
Read 2 more answers
Sal built a card table with a top area of 900 square inches. What is the length, in inches, of one side of the table?
Klio2033 [76]
Answer:
30

Explanation:
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Hope this helped you :)
7 0
3 years ago
Read 2 more answers
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