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21-12-2021
Mathematics

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(s – 7)^2= 0

then, what is the value of: (s-9)(s + 3)?

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21-12-2021

Answer:

s² - 6s - 27

Step-by-step explanation:

(s - 7)² = 0

s² + 49 - 14s = 0

Now,

(s - 9)(s + 3)

(s × s) + (s × 3) - (9 × s) - (9 × 3)

s² + 3s - 9s - 27

s² - 6s - 27

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