Module IV

Rather than just memorize a formula how about understanding Problem-Solving well enough to derive it. Because that's basically all you're doing...You are solving for x where

ax2 + bx +c  = 0

You're going to use your two problem-solving tools, Hero Zero and No Fun Get Back To 1.  You are employing concepts four & five of the five basic concepts.

No one ever took the five minutes to show me this. This is the quick and dirty derivation without lots of explanation. When you click enter you will get much, much more explanation than this...PLUS few examples putting the Quadratic Formula into action.

Enter
Module IV

After you're done with the next page you will understand how we get from this:

ax+ bx +c  = 0

to this:

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"Sometimes it is useful to know how large your zero is." ~Author Unknown

"Mathematics is the only good metaphysics." ~Lord Kelvin

“The difference between the poet and the mathematician is that the poet tries to get his head into the heavens while the mathematician tries to get the heavens into his head.” ~G.K. Chesterton

More math quotes

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Want to see more free pages & lessons & other free stuff on this site?

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Consider a dollar a month.  This will also allow me to volunteer my time.

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