Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas.
The possible values of a are -1 and 8.
Enter all possible values
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a+ab=250a=2501+ba−ab=−2402501+b−250b1+b=−240250−250b=−240(1+b)−250b+240b=−240−250−10b=−490b=49a=2501+49a=5
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