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- Solve for y
- Find the derivative using the definition
- Solve by quadratic formula (general formula)
- Simplify
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Apply fraction cross-multiplication
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$\left(y-8\right)y=-9$
Learn how to solve problems step by step online. Solve the rational equation (y-8)/3=-3/y. Apply fraction cross-multiplication. Multiplying polynomials y and y-8. 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=1, b=-8 and c=9. Then substitute the values of the coefficients of the equation in the quadratic formula: \displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.