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Ugo [173]
3 years ago
12

Please help . I’ll mark you as brainliest if correct! Only the one marked with an X is wrong . I don’t get it

Mathematics
2 answers:
Gnom [1K]3 years ago
8 0

Answer:

(x+7)² = 9

Step-by-step explanation:

soldier1979 [14.2K]3 years ago
4 0

Answer:

(x+7)² = 9

Step-by-step explanation:

x² + 14x + 40 = 0

(x² + 14x) + 40 = 0  

(x² +14x +49) + 40 - 49 = 0

(x+7)² - 9 = 0

(x+7)² = 9

Hope this helps!

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or
v=300000/5400=55,5 m/s
8 0
3 years ago
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Step-by-step explanation:

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Read 2 more answers
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