Simplify: frac3x2−3x2+2x+1\\frac{3x^2 - 3}{x^2+2x+1}frac3x2−3x2+2x+1 (assume x≠−1x \neq -1x=−1).
frac3(x−1)x+1\\frac{3(x-1)}{x+1}frac3(x−1)x+1
3(x−1)3(x-1)3(x−1)
fracx−1x+1\\frac{x-1}{x+1}fracx−1x+1
frac3x+1\\frac{3}{x+1}frac3x+1