# Topic

Special identities 5.

Square of a trimonial

# Special identities 5.

The square of a three-term expression is the same as the sum of the squares of the terms plus the double product of each pair of the terms.

The square of a three-term expression is the same as the sum of the squares of the terms plus the double product of each pair of the terms.

Pictogram:

Examples:

Examples:

Examples: