Solution 2.3:3a

From Förberedande kurs i matematik 1

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The left-hand side of the equation consists of two factors,
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<center> [[Image:2_3_3a.gif]] </center>
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<math>x</math>
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and
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<math>x+\text{3}</math>. The only possibilities that their product is zero are if either
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<math>x</math>
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or
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<math>x+\text{3}</math>
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is zero. Hence , the equation has the solutions
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<math>x=0\text{ }</math>
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and
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<math>x=-\text{3}</math>.

Revision as of 14:49, 20 September 2008

The left-hand side of the equation consists of two factors, \displaystyle x and \displaystyle x+\text{3}. The only possibilities that their product is zero are if either \displaystyle x or \displaystyle x+\text{3} is zero. Hence , the equation has the solutions \displaystyle x=0\text{ } and \displaystyle x=-\text{3}.