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The quadratic equation x^2+2x−8=0 can be rewritten as (x+4)(x−2)=0.
What is the multiplicity of the root x=−4?
A.The multiplicity of the root is 1.
B.The multiplicity of the root is 3.
C.The multiplicity of the root is 2.
D.The multiplicity of the root is 4.