# Factoring expressions

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((x^2 +ax +b)/(x^2 +11x +28))

((x^2 +4x -21)/(x^2 -9))= (x+2)/(x+3)

What is a+b=?

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##### Solution Summary

This shows how to factor polynomial expressions. The constant functions are examined.

##### Solution Preview

We have to factorize the second degree equations.

(x^2 +11x +28)=(x+7).(x+4)

(x^2 ...

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