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21-06-2016
Mathematics

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Factor each expression.

Problem: r^2 +12r +27
Answer: (r + 3) (r + 9)

Respuesta :

21-06-2016

Think of it like this, what two numbers when multiplied together, you get 27, and when they add together, you get 12? The answer is 9 and 3,
Your answer here would be (r+9)(r+3) when factored.

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