how to slove #5 pg. 309 in mcgraw hill's course 2 vol. 1 textbook

How to Solve a Problem

• Method 1 of 3: Approaching the Problem. Define the problem. Find the real problem, not just the symptoms that result from the problem. ...
• Method 2 of 3: Taking a Creative Approach. Brainstorm different solutions. Think of different ways to solve your problem. ...
• Method 3 of 3: Managing Your Emotions While Confronting Difficulties. Calm your emotions. ...

Full Answer

1. White cross

Let's begin with the white face. First we have to make a white cross paying attention to the color of the side center pieces. You can try to do this without reading the instructions.

2. White corners

In this step we have to arrange the white corner pieces to finish the first face. If you are very persistent and you managed to do the white cross without help then you can try to do this one as well. If you don't have patience I'll give you some clue.

3. Second layer

Until this point the procedure was pretty straight forward but from now on we have to use algorithms. We can forget the completed white face so let's turn the cube upside down to focus on the unsolved side.

4. Yellow cross

Sart solving the last layer making a yellow cross on the top of the cube. It doesn't matter if the pieces are not on their final places so we don't have to pay attention to the colors of the sides.

5. Yellow edges

After making the yellow cross on the top of the cube you have to put the yellow edge pieces on their final places to match the colors of the side center pieces. Switch the front and left yellow edges with the following algorithm:

6. Yellow corners on their places

Only the last layer corners are left unsolved. First we have to get them to the right spot, so don't worry about the orientation in this step.

7. Orient Yellow Corners

All pieces are on their right places you just have to orient the yellow corners to finish the puzzle. This proved to be the most confusing step so read the instructions and follow the steps carefully.

What is an Equation?

An equation says that two things are equal. It will have an equals sign "=" like this:

What is a Solution?

A Solution is a value we can put in place of a variable (such as x) that makes the equation true.

Solutions Everywhere!

Some equations are true for all allowed values and are then called Identities

Like a Puzzle

In fact, solving an equation is just like solving a puzzle. And like puzzles, there are things we can (and cannot) do.

Special Equations

There are special ways of solving some types of equations. Learn how to ...

Tips

Note down where an expression is not defined (due to a division by zero, the square root of a negative number, or some other reason)

Notation

If you're still reading, congratulations on not being put off by the time requirements! The first thing you are going to need to know about solving the cube is how the turns you make can be represented by letters. Later on in this guide, you're going to need a few algorithms.

Step 1: The Cross

The cross is the first step in the actual solution of the puzzle. This step can be a bit confusing at first, so make sure you read this a few times whilst attempting it yourself. The image shows the end goal of this step.

Step 2: The White Corners

Now you've done the edges on the white face, all that's left are the corners. This step is much simpler, as it only requires one algorithm. The picture shows the end goal of this step.

Step 3: Middle Layer Edges

You're 1/3 done (kinda)! You're done with all white pieces, so you can now flip your cube so white is on the bottom.

Step 4: Yellow Cross

We're nearly there now. 2/3 of the puzzle is solved, and every piece left to be solved has yellow on it somewhere. That's a good sign… right?

Step 5: Sune and Antisune

Sune is a very simple algorithm that many puzzlers love due to its simplicity compared to other algorithms that they may have had to learn. There are 7 different corner positions possible after you have oriented the edges. Sune and Antisune are two of these, but we won't always get them straight away.