SOLUTION: If h(x)=x2+x, with x -12, then what is h-1(20)? What is the domain

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Question 1167742: If h(x)=x2+x, with x -12, then what is h-1(20)?
What is the domain
Answer by ikleyn(52797) About Me  (Show Source):
You can put this solution on YOUR website!
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In your post,  this fragment   " with x-12 "   makes the entire parcel nonsensical.