Mr. knotts found the difference of the following expression. which statement is true about mr. knotts's work?
x/x^2-1 -1/x-1

For this case we have the following expression:

To simplify we have:

Rewriting with the same denominator we have:

Thus, the simplified expression is:

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form