Question 242575
(4x^6-3x^4-4x^2-2x+7)-(x^3+3x^2+6x)


first you want to remove parentheses.


you get:


4x^6 - 3x^4 - 4x^2 - 2x + 7 - x^3 - 3x^2 - 6x


then you want to reorder the terms in descending order.


you get:


4x^4 - 3x^4 - x^3 - 4x^2 - 3x^2 - 2x - 6x + 7


then you combine like terms.


-4x^2 - 3x^2 = -7x^2


-2x - 6x = -8x


you get:


4x^4 - 3x^4 - x^3 - 7x^2 - 8x + 7


that's your answer.