Question 61812
(8x^4 - 5x^3 + 7x^2 - 4x + 1) - (2x^4 - 5x^3 + 2x^2 - 4x + 3)
8x^4 - 5x^3 + 7x^2 - 4x + 1 - 2x^4 + 5x^3 - 2x^2 + 4x - 3
8x^4 - 2x^4 - 5x^3 + 5x^3 + 7x^2 - 2x^2 - 4x + 4x + 1 - 3
6x^4 + 5x^2 - 2