Answer:
The additive inverse is equal to 
Step-by-step explanation:
we know that
Two polynomials area additive inverses if they are opposites of each other
we have

To find the additive inverse multiply the polynomial by -1

Just factorize the polynomial and you will get (x-2)(x-10) its roots are +2 and +10 and the multiplicities are +4 root of multiplicity 1, and +10 root of multiplicity 1.
Answer:
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Step-by-step explanation: