Garrett Shields

1. Cộng đồng
2. Study Group
3. Quadratic Equation

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. Cộng đồng
2. Study Group
3. Quadratic Formula

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...