Final answer to the problem
$x=1,\:x=-9$
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Step-by-step Solution
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- Solve for x
- Find the derivative using the definition
- Solve by quadratic formula (general formula)
- Simplify
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1
Factor the trinomial $x^2+8x-9$ finding two numbers that multiply to form $-9$ and added form $8$
Learn how to solve quadratic equations problems step by step online.
$\begin{matrix}\left(-1\right)\left(9\right)=-9\\ \left(-1\right)+\left(9\right)=8\end{matrix}$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation x^2+8x+-9=0. Factor the trinomial x^2+8x-9 finding two numbers that multiply to form -9 and added form 8. Rewrite the polynomial as the product of two binomials consisting of the sum of the variable and the found values. Break the equation in 2 factors and set each factor equal to zero, to obtain simpler equations. Solve the equation (1).
Final answer to the problem
$x=1,\:x=-9$
