81.
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A value of the variable when the polynomial has a value of 0. Equivalently, the value of the variable when the graph of the polynomial intersects the variable axis (usually the x-axis).
A local minimum.
Substitute that value of the variable and evaluate the polynomial.
What value, in place of the question mark, makes the polynomial below a perfect square trinomial?x2 + 12x+ ?
None does, since there is no polynomial below.
49
49
38
64
-12
144
(b/2)^2= 64
48
There are infinitely many possible answers: c = ±4x + 33
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