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Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas.

 Oct 14, 2024
 #1
avatar+1234 
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Real numbers a and b satisfy    
a + ab = 250    
a - ab = -240    
Enter all possible values of a, separated by commas.    

 

 

given the two equations    

                                                     a + ab  =    250    

                                                     a – ab  =  –240    

simply add the two equations    

                                                    2a         =      10    ==>>    a = 5          

.   

 Oct 14, 2024

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