Question 205857
Polynomial---- a mathematical expression of one or more algebraic terms each of which consists of a constant multiplied by one or more variables raised to a nonnegative integral power (as a + bx + cx2)
Now lets rewrite your polynomial:
x^2-5x+6=x^2-5x^1+6x^0  and we know that x^0=1

Hope this helps----ptaylor