college algebra
posted by zachary .
given the following polynomial find the zero and multiply of each
were the graph touches the x axis
number of turning points
fx =(x4)(x^225)

0 = (x4)(x+5)(x5)
Set each equal to zero and solve for x. That will give you three different zeros. Each occurs only once. 
f(x) = (x4)(x5)(x+5)
3 roots, each of multiplicity 1
The graph crosses the axis at each root, so it has to turn around 2 times. 
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