How to add polynomials - PSAT Math

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Question

Add the polynomials.

$(x^{2}+5x+12) + (3x^{3}+3x+8)$

Answer

We can add together each of the terms of the polynomial which have the same degree for our variable. $(3x^{3}) + (x^{2}) + (5x+3x) + (12+8) = 3x^{3}+x^{2}+8x+20$

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