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Multiply the single term $x$ by each term of the polynomial $\left(x+7\right)$
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$\frac{-x^3+x^2+22x-40}{x^2+7x}=0$
Learn how to solve rational equations problems step by step online. Solve the rational equation (-x^3+x^222x+-40)/(x(x+7))=0. Multiply the single term x by each term of the polynomial \left(x+7\right). Factor the polynomial x^2+7x. Add and subtract \left(\frac{b}{2}\right)^2, replacing b by it's value 7. Now, we can factor x^2+22x+-x^3 as a squared binomial of the form \left(x+\frac{b}{2}\right)^2. Subtract the values \frac{49}{4} and -\frac{49}{4}.