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}.
