Evaluate the following
`6 xx 9`

Answer

To evaluate the expression `6 xx 9`, we will follow these steps:

### Step 1: Understand the multiplication
We need to evaluate the multiplication of 6 and 9. This can be represented as:
\[ 6 \times 9 \]

### Step 2: Break down the numbers
To understand the multiplication better, we can express 6 and 9 in terms of simpler numbers:
- \( 6 = 10 - 4 \)
- \( 9 = 10 - 1 \)

### Step 3: Set up the multiplication
Now we can rewrite the multiplication using these expressions:
\[ (10 - 4) \times (10 - 1) \]

### Step 4: Use the distributive property
We will apply the distributive property (also known as the FOIL method for binomials):
\[ (10 - 4)(10 - 1) = 10 \times 10 - 10 \times 1 - 4 \times 10 + 4 \times 1 \]

### Step 5: Calculate each part
Now, we will calculate each part:
1. \( 10 \times 10 = 100 \)
2. \( 10 \times 1 = 10 \)
3. \( 4 \times 10 = 40 \)
4. \( 4 \times 1 = 4 \)

### Step 6: Combine the results
Now we combine these results:
\[ 100 - 10 - 40 + 4 \]

### Step 7: Perform the subtraction and addition
1. First, subtract 10 from 100:
\[ 100 - 10 = 90 \]
2. Next, subtract 40 from 90:
\[ 90 - 40 = 50 \]
3. Finally, add 4 to 50:
\[ 50 + 4 = 54 \]

### Final Answer
Thus, the value of \( 6 \times 9 \) is:
\[ \boxed{54} \]

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