Common Algebra Mistakes
Example: Solving a Quadratic Equation |

The Goal
Solve the following equation for y:
The Mistake
Find the algebra mistake: (Roll the mouse over the algebra to see hints in red) The Correction
(Roll the mouse over the area above to see the corrections in blue) An Explanation
There are three mistakes, all sign errors. In the first step the sign of c is changed for no reason. In the second step the sign of the x |

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