All animals are equal, but some animals are more equal than others.

But if you just pick a simple a is equal to 1, than what's b equal to?

So let's do a little bit of algebra.

That'll give us the total work.

This is just rewriting that. What I want to show you here is the proof of equivalence between the raw score formula and the Z square formula.

I can't tell you anything.

Right?

And you say OK, this has to be equal to 0, or that has to be equal to 0.

What two numbers when I add them equal 1, and when I multiply them equal minus 42?

All right, the coefficient in front of the x squared term is equal to a 1.

So we're saying this function, when does this function equal 0?

So if d1 is equal to d2, and that equals 2a, then we know that this has to be equal to a.

Divide both sides by 3, and we get x is equal to 7 thirds. x is equal to let me just write it here x is equal to 7 over 3.

And the focal length this a squared plus b square.

So this is equal to five y plus four thirds

Their job is to read the news clearly and carefully.

We take the 10, substitute it in for x. h of 10 is equal to 5 times x.

Imagine a giant asteroid on a collision course with Earth.

They are pleased with your work.

So here we have a cycle of a planet which is like our Earth, but is all made of ethane and methane and organic material.

It's theirs now.

And that animated graphics can make a difference.

So if we were to take minus 11x squared divided by 2x, that is equal to what?

It's about your son.

I am vile spew of the wretched masses.

Well, we said that equals to 2a, that equals this distance right here.

This is the same thing as 9x times x plus 4 is equal to 405.

9x times x is equal to 9x squared.

So maybe that's right here.

I know it says a minus 1, but think about it.

Another way you could think about it, when x is equal to 1, we're at this point of the red parabola.

I'm in a devilish scrape I've been mad, I think.

Minus 3.

Our statement 5, we now know that BF is equal to CE

1 plus 6 is 7.

That is a.

So 1 times minus 1 is minus 1, is equal to 15.

That's this line right here.

So what's the upper and lower bounds on the x's?

5 divided by 64 is equal to .07, whatever, whatever.

So that just becomes 0.

So the y intercept is equal to 2.

Scratch out all this.

This is 2x squared.

So 78 divided by 0.15 is exactly 520.