Math

(4x^4+ 3x^3+ 2x^2+ x) + (3x^4 -4x^3 +2x^2 -x)

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(4x^4+ 3x^3+ 2x^2+ x) + (3x^4 -4x^3 +2x^2 -x)

4x^4+ 3x^3+ 2x^2+ x + 3x^4 -4x^3 +2x^2 -x

4x^4+3x^4 +3x^3-4x^3 +2x^2+2x^2 +x-x

7x^4 -x^3 +4x^2