For binomials of the form (x - y) ^ n explain how to determine the sign of a term without writing out the entire expansion

When raising an expression of that format to any power, after grouping like terms, you'll always find that the odd numbered terms are positive, and the even numbered terms are negative.

For example:

(x - y)² = x² − 2xy + y²

(x - y)³ = x³ − 3x²y + 3xy² − y³

(x - y)⁴ =x⁴ − 4x³y + 6x²y² − 4xy³ + y⁴

etc.

well we know there are 4 clubs in 52 cards so it’s replaced so it should be 3/51

step-by-step explanation: