Final answer to the problem
$10$
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Step-by-step Solution
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1
Factor the trinomial $x^2+4x-21$ finding two numbers that multiply to form $-21$ and added form $4$
Learn how to solve limits by factoring problems step by step online.
$\begin{matrix}\left(-3\right)\left(7\right)=-21\\ \left(-3\right)+\left(7\right)=4\end{matrix}$
Learn how to solve limits by factoring problems step by step online. Find the limit of (x^2+4x+-21)/(x-3) as x approaches 3. Factor the trinomial x^2+4x-21 finding two numbers that multiply to form -21 and added form 4. 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\to3}\left(x+7\right) by replacing all occurrences of x by 3.
Final answer to the problem
$10$
