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If there is only one element a in the set a = (x / x square + ax + B = 0), the value of A.B is obtained?
If there is only one element a in the set a = (x / x square + ax + B = 0), the value of A.B is obtained?
There is only one element a
That is to say, the equation has only one solution, which is x = a
There is only one solution
Discriminant = 0
a²-4b=0
X = a is the solution, a & sup2; + A & sup2; + B = 0
b=-2a²
So a & sup2; - 4 (- 2A & sup2;) = 0
9a²=0
a=0
b=-2a²=0
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