Learn how to solve one-variable linear equations problems step by step online. Simplify the expression (x-9)/(x+1)(x^2-1)/(x+9). Multiplying fractions \frac{x-9}{x+1} \times \frac{x^2-1}{x+9}. Simplify \sqrt{x^2} using the power of a power property: \left(a^m\right)^n=a^{m\cdot n}. In the expression, m equals 2 and n equals \frac{1}{2}. Calculate the power \sqrt{1}. Simplify \sqrt{x^2} using the power of a power property: \left(a^m\right)^n=a^{m\cdot n}. In the expression, m equals 2 and n equals \frac{1}{2}.

Simplify the expression (x-9)/(x+1)(x^2-1)/(x+9)