Now take the other two, stick 'em on the other side.

So let's do that.

That's kind of a mistake together.

So you see it that way.

20 minus 7y is equal to 6y minus 6.

And then 3 times negative 25 over 3 is just negative 25.

Equals a.

And hopefully you're satisfied with that.

Let's take all the y's and the constants on one side of the equation.

So this is my three dimensional plane.

As he often did, Velázquez put himself in this painting too.

And actually there are certain matrices that you can add in one direction that you can't add in the other oh, that you can multiply in one way but you can't multiply in the other order.

Those are gonna cancel out, you're gonna be just left with 20.

So let's just get the absolute value of h on one side of the equation.

No, we used that.

On the left is what we call the lytic way, where the viruses go right in and take over the cells.

So this fits the pattern of a perfect square.

And this should simplify things.

We kind of get it. But not really.

Yeah! Woo hoo! Come down.

If we take the positive square root.

When I was about 10 years old, I sold comic books out of our cottage on Georgian Bay.

So let's see, so we get x.

And my question to you is

Both sides, professor.

This led to the informatized spread of experts skills among the industry.

So x minus 1 greater than 0.

These get messy. x minus 1 squared is equal to 16.

We care how we make our profit.

They're boots, anyhow, said the Voice.

Միտքոնդրիան բջիջներ

Once again, whenever you see anything like this, get all of your terms on one side of the equation and get a 0 on the other side.

So now you understand how viruses can attack cells.

And the best way I can think of doing that is just to add 20 to both sides of this equation.

Now let's see if we can simplify this at all.

We want the right side to just be x minus 1.

In fact, we know what a is. a is minus 7 12.

Nowadays, this idea has a dramatic name Spaceship Earth.

Let's see what happens to our subsitution.

We don't want this 11 there.

They're identical.

We have x squared on both sides of this, we subtract x squared from both sides of the equation.

And now we could square both sides of this equation right here.

But anyway, and this works both ways only if we're dealing with square matrices.

These are the same thing.