Precalc0006to0010-page20 - (Section 0.9: Simplifying...

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(Section 0.9: Simplifying Algebraic Expressions) 0.9.2 For example, we can divide the numerator and the denominator of x x 2 x + 4 () by x and obtain 1 xx + 4 . We have canceled a pair of x factors: 1 x x + 4 = 1 + 4 WARNING 2 : We cannot cancel a pair of x factors in x x 2 + 4 , because x is not shown as a factor of the entire denominator. Canceling and Restrictions When canceling, if a factor is
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This document was uploaded on 12/29/2011.

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