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Find the sum.

`(-5 x^5 -42 x^3 -62)+(67 x^5 -70 x^3 + 62)` =  

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( ) ( ] [ ) [ ] —∞ ∞ ∪ DNE
< > ≤ ≥ or All Real Numbers DNE
log logn ln n√  | | e 
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