SOLUTION: 1.(x+y+1)² 2.(x+y-1)² 3.(x-y-1)² 4.(-x-y-1)² question: what is the direct of switching the + sign to -sign on the product?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 1.(x+y+1)² 2.(x+y-1)² 3.(x-y-1)² 4.(-x-y-1)² question: what is the direct of switching the + sign to -sign on the product?       Log On


   

Question 630736: 1.(x+y+1)²
2.(x+y-1)²
3.(x-y-1)²
4.(-x-y-1)²
question:
what is the direct of switching the + sign to -sign on the product?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
1.(x+y+1)²
2.(x+y-1)²
3.(x-y-1)²
4.(-x-y-1)²
question:
what is the direct of switching the + sign to -sign on the product?
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1. = x^2 + 2xy + y^2 + 2x + 2y + 1
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Multiply the others, compare them
#4 = #1