Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas.
Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas.
You probably won't find a simpler problem than this in your whole math textbook.
a + ab = 250
a – ab = –240
Just add them together
2a = 10
Divide both sides by 2
a = 5
That's it.
That's all the possible values.
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If you add the two systems, you get 2a=10, so a=5.
I'm pretty sure that is the only value of a (correct me if I am wrong).