Today we discussed the quadratic formula. We looked at how it lets us determine the exact value of the x-intercepts of a quardatic function.

For a summary of what we learned check out this link.

There is also a really good explanation on how the quadratic formula was derived using completing the square. This link talks about the history behind the quadratic formula and who was the first mathematician to use the formula.

## Monday, April 04, 2005

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