Question 503721

{{{(5x^2 + 9x^4 - 2x^3 - 3) - (8x^6 - 8x^5 + x^4 - 4)}}}


{{{5x^2 + 9x^4 - 2x^3 - 3 - 8x^6 + 8x^5 - x^4 + 4}}}


{{{-8x^6+8x^5+8x^4-2x^3+5x^2+1}}}


So {{{(5x^2 + 9x^4 - 2x^3 - 3) - (8x^6 - 8x^5 + x^4 - 4)}}} simplifies to {{{-8x^6+8x^5+8x^4-2x^3+5x^2+1}}}


In other words, {{{(5x^2 + 9x^4 - 2x^3 - 3) - (8x^6 - 8x^5 + x^4 - 4) = -8x^6+8x^5+8x^4-2x^3+5x^2+1}}}