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, |
- | < | + | <math>x</math> |
- | {{ | + | and |
+ | <math>x+\text{3}</math>. The only possibilities that their product is zero are if either | ||
+ | <math>x</math> | ||
+ | or | ||
+ | <math>x+\text{3}</math> | ||
+ | is zero. Hence , the equation has the solutions | ||
+ | <math>x=0\text{ }</math> | ||
+ | and | ||
+ | <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}.