You can put this solution on YOUR website! (-6x^4+3x^2-16)+ (4x^2+4x-7) let's remove these unnecessary parantheses;
-6x^4+3x^2-16+ 4x^2+4x-7 Now we can add the like terms, terms that have the same degrees;
-6x^4+7x^2+4x-16 (The only like terms in the given expression were; 3x^2 and 4x^2)
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