+0  
 
0
1
1
avatar+415 

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

 Jul 3, 2024
 #1
avatar+129739 
+1

a + ab =   250

a -  ab =  -240          add these

 

2a = 10

 

a = 5

 

5 + 5b = 250

5b = 245

b = 245 / 5  =   49

 

(a, b)  = (5 , 49)

 

cool cool cool

 Jul 3, 2024

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