Proving the quadratic formula

Ordering exercise

Put the items in the right order.
START
1.Divide by a
2.Completing the square
3. Isolate x (part 1)
4. Calculate the square at the right and make the denominators equal
5. Add the fractions
6. Calculate the square root
7. Simplify the square root
8. Isolate x (part 2)
9. Add the fractions
FINISH!
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