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}.
