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Lilit [14]
3 years ago
13

What the solution set (x+9)^2=169 of this quadratic equations by extracting the roots? ​

Mathematics
1 answer:
Svetach [21]3 years ago
6 0

Answer:

x = - 22, x = 4

Step-by-step explanation:

Given

(x + 9)² = 169 ( take the square root of both sides )

x + 9 = ± \sqrt{169} = ± 13 ( subtract 9 from both sides )

x = - 9 ± 13

Thus

x = - 9 - 13 = - 22

x = - 9 + 13 = 4

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