haleymememe haleymememe

31-01-2017
Mathematics

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Solve for C when 9=c(c-8)

Can you show your work too? This question confuses me!

Respuesta :

Аноним Аноним

31-01-2017

9 = c(c - 8)
9 = c² - 8c
c² - 8c - 9 = 0
c² + c - 9c - 9 = 0
c(c + 1) -9 (c + 1) = 0
(c+1)(c-9) = 0
c = -1 or 9

In short, Your Answers would be -1 and 9

Hope this helps!

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