**Pay attention** - The formula also works in non-algebraic expressions or combinations with numbers and unknowns.

$(X-7)^2=$

Here we identify two elements between which there is a minus sign and they are enclosed in parentheses and raised to the square as a single expression.

Therefore, we can use the formula for the difference of squares.

We will work according to the formula and pay attention to the minus and plus signs.

** We will obtain:Β **

$(X-7)^2=x^2-14x+49$

Indeed, we pronounce the same expression differently using the formula.

**If you are interested in this article, you might also be interested in the following articles:**

Square

The area of a square

Multiplication of the sum of two elements by the difference between them

The formula for the sum of squares

The formulas that refer to two expressions to the power of 3

**In the blog of** **Tutorela** **you will find a variety of articles about mathematics.**