# Can I Really Prove That 1 Equals 2? Let's Find Out!

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## Chapter 1: The Curious Case of 1 and 2

Can we truly establish that the values 1 and 2 are identical? Let's delve into some intriguing mathematical assertions to find out!

## Section 1.1: The First Proof

Let’s assume a equals b. We begin with the equation:

a^2 = a cdot a = a cdot b

Next, we subtract b² from both sides:

a^2 - b^2 = a cdot b - b^2

Now, we can factor both sides:

(a + b)(a - b) = b(a - b)

If we divide both sides by (a - b), we get:

a + b = b

Substituting a with b yields:

b + b = b

This simplifies to:

2b = b

Which leads us to the startling conclusion:

2 = 1 quad (q.e.d.)

## Section 1.2: Still Skeptical?

Let’s consider another proof. Assume x equals 1.

Multiply both sides by x:

x^2 = x

Now, subtract 1 from both sides:

x^2 - 1 = x - 1

Factoring gives us:

(x + 1)(x - 1) = x - 1

If we divide by (x - 1), we arrive at:

x + 1 = 1

Substituting x back in yields:

1 + 1 = 1

Leading us again to:

2 = 1 quad (q.e.d.)

## Chapter 2: Identifying the Flaws

Now, let’s examine where the errors lie in these "proofs."

#### Flaw in Proof 1

The mistake occurs when we divide by (a - b). If we assume a equals b, we are essentially dividing by zero, which is undefined in mathematics. Thus, any conclusions that follow from this operation are invalid.

#### Flaw in Proof 2

Similarly, in the second proof, dividing by (x - 1) when x equals 1 is also dividing by zero. This leads to nonsensical conclusions, proving that the initial assertions are incorrect.

This video titled "Proof that 1 = 2" explores these mathematical errors in detail.

The second video, "Proof that 1 = 2 #shorts," offers a concise look at these proofs and their flaws.

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