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Factor the trinomial $x^2-3x-4$ finding two numbers that multiply to form $-4$ and added form $-3$
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$\begin{matrix}\left(1\right)\left(-4\right)=-4\\ \left(1\right)+\left(-4\right)=-3\end{matrix}$
Learn how to solve problems step by step online. Find the limit of (x-4)/(x^2-3x+-4) as x approaches 4. Factor the trinomial x^2-3x-4 finding two numbers that multiply to form -4 and added form -3. Rewrite the polynomial as the product of two binomials consisting of the sum of the variable and the found values. Simplifying. Evaluate the limit \lim_{x\to4}\left(\frac{1}{x+1}\right) by replacing all occurrences of x by 4.