Precalc0006to0010-page25

Precalc0006to0010-page25 - (Section 0.9 Simplifying...

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(Section 0.9: Simplifying Algebraic Expressions) 0.9.7 We will multiply the numerator and the denominator by the Least Common Denominator (LCD), 34 x + 7 () 2/3 , or 3 u . = x + 7 ± ² ³ ´ 2 x 4 x + 7 1/3 µ 4 x 2 x + 7 ± ² ³ ´ · · x + 7 ± ² ³ ´ 4 x + 7 ± ² ³ ´ or 3 u ± ² ³ ´ 2 xu µ 4 x 2 3 u ± ² ³ ´ · 3 u ± ² ³ ´ u ± ² ³ ´ WARNING 7 : Do not cancel the expressions above in red. We must apply the Distributive Property . If it helps, write the following step; with experience, you can skip it. = x + 7 ± ² ³ ´ 2 x 4 x + 7 ± ² ³ ´ µ 4 x 2 ± ² ³ ´ · · x + 7 ± ² ³ ´ 4 x + 7 ± ² ³ ´
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