118-(3xb)
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y=b+x+x^2 This is a quadratic equation. The graph is a parabola. The quadratic equation formula or factoring can be used to solve this.
x=-b/2a [negative B over 2A]
A parabola opening up has a minimum, while a parabola opening down has a maximum.
The one that forms a parabola (a hump, sort of) is called the quadratic expression or quadratic formula.
It is the bisector of any 2 parallel chords drawn to the parabola. It is always parallel to the axis of the parabola.