Apply the fraction rule $\frac{a}{c}-\frac{b}{c}=\frac{a-b}{c}$
$=\frac{x(x-1)-3(x+1)}{(x+1)(x-1)^{2}}$
Simplify $x(x-1)-3(x+1):{\quad}x^{2}-4x-3$
$=\frac{x^{2}-4x-3}{(x+1)(x-1)^{2}}$
Frequently asked questions (FAQs)
Math question: What is the smallest positive integer solution for x, y, and z in the equation x^n + y^n = z^n for n > 2, according to Fermat's Last Theorem?
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Question: What is the limit as x approaches 0 of (2x^3 - 5x^2 + 3x) / (4x^2 + x - 1)?
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