Correlation analysis:

172× 172=29584

In the square formula, for example, the square of A means a×a, which can be abbreviated as A or written as A× A (the first power of A times the first power of A equals the second power of A), for example, 4×4= 16, 8×8=64, and the square symbol is 2. The square of a number is nonnegative. Answer? ≥0. Application: If a? +b？ =0, then a=0 and b=0.

Extended data

Correlation formula:

The product of the sum of two numbers and the difference between the two numbers is equal to the square difference between the two numbers. This is the square difference formula.

The left side of the square difference formula is the sum of two numbers multiplied by the difference between the two numbers, that is, the left side is the product of two binomials, in which one term (a) is exactly the same and the other terms (b and -b) are opposite; On the right is the square difference between these two numbers, that is, the square of the same term MINUS the square of the opposite term of the right sign.

When the division formula is the sum of two numbers and the difference between the two numbers is multiplied, the product is binomial. This is because when two binomials with such characteristics are multiplied, two of the four terms of the product will be opposite. The result of the merger of these two items is zero, so there are only two items left.