Simplify the expression x4−81x2−2x−3÷x2+9x2+x\frac{x^4 - 81}{x^2 - 2x - 3} \div \frac{x^2 + 9}{x^2 + x}x2−2x−3x4−81÷x2+xx2+9 and state the domain restrictions.
x(x2+9)x−3\frac{x(x^2+9)}{x-3}x−3x(x2+9), x≠3,−1,0x \neq 3, -1, 0x=3,−1,0
x(x−3)x+1\frac{x(x-3)}{x+1}x+1x(x−3), x≠3,−1,0,−3x \neq 3, -1, 0, -3x=3,−1,0,−3
x(x+3)x−3\frac{x(x+3)}{x-3}x−3x(x+3), x≠3,−1,0x \neq 3, -1, 0x=3,−1,0
x(x−3)x−1\frac{x(x-3)}{x-1}x−1x(x−3), x≠3,−1,0x \neq 3, -1, 0x=3,−1,0