Asked by Donna
How do I write a polynomial expression to represent the third side of the triangle? I know one side is 2x-3y and the other is x+2y and P=5x+2y? I am lost.
Answers
Answered by
Reiny
I will assume that P represents the perimeter.
Let the third side be S
S + 2x-3y + x+2y = 5x + 2y
S = 5x+2y - 2x + 3y - x - 2y
= 2x + 3y
check:
What is the sum of (x+2y) + (2x-3y) + (2x+3y) ??
Let the third side be S
S + 2x-3y + x+2y = 5x + 2y
S = 5x+2y - 2x + 3y - x - 2y
= 2x + 3y
check:
What is the sum of (x+2y) + (2x-3y) + (2x+3y) ??
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