2 .. Let b, ce {1,2,3,4}. If the equationx+ + bx + c = 0 has real roots, thenthe number


Question:

2
.. Let b, ce {1,2,3,4}. If the equationx+ + bx + c = 0 has real roots, thenthe number of ordered pairs (b, c)is .​

 


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