Your equation needs to equal zero on one side before the quadratic equation will work. It has to do with the way the quadratic equation is derived, and I don't have time or tools to provide the det...

1. Közösség
2. Study Group
3. Quadratic Equation

They have simplified the square root. Here are the missing details: sqrt(88)=sqrt(4x22)=sqrt(4)sqrt(22)=2sqrt(22). You can do this because the square root is really an exponent (it's the 1/2 power...

1. Közösség
2. Study Group
3. Quadratic Formula