Final answer to the problem
$x=\frac{-4+\sqrt{448}}{18},\:x=\frac{-4-\sqrt{448}}{18}$
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Step-by-step Solution
How should I solve this problem?
- Choose an option
- Solve for x
- Find the derivative using the definition
- Solve by quadratic formula (general formula)
- Simplify
- Find the integral
- Find the derivative
- Factor
- Factor by completing the square
- Find the roots
- Load more...
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1
Rewrite the equation
Learn how to solve quadratic formula problems step by step online.
$9x^2+4x-12=0$
Learn how to solve quadratic formula problems step by step online. Solve the quadratic equation 9x^2+4x=12. Rewrite the equation. To find the roots of a polynomial of the form ax^2+bx+c we use the quadratic formula, where in this case a=9, b=4 and c=-12. Then substitute the values of the coefficients of the equation in the quadratic formula: \displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}. Simplifying. To obtain the two solutions, divide the equation in two equations, one when \pm is positive (+), and another when \pm is negative (-).
Final answer to the problem
$x=\frac{-4+\sqrt{448}}{18},\:x=\frac{-4-\sqrt{448}}{18}$
