Let $f(x) = x|x|.$  Find $f^{-1}(4) + f^{-1}(-100).$
Question:
Let $f(x) = x|x|.$  Find $f^{-1}(4) + f^{-1}(-100).$
Answer:
Let's think step by step.

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Let $f(x) = x|x|.$  Find $f^{-1}(4) + f^{-1}(-100).$
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