SOLUTION: The sum of two binomials is 3x²-5x.If one of the binomials is 2x²-x, what is the other?

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Question 198011: The sum of two binomials is 3x²-5x.If one of the binomials is 2x²-x, what is the other?
Found 2 solutions by jim_thompson5910, solver91311:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If "A" and "B" are two binomials which add to a third binomial "C", then this means that A%2BB=C. If we know what "A" and "C" are, then we can subtract "A" from both sides to solve for "B" like so:

B=C-A



So in this case, C=3x%5E2-5x, A=2x%5E2-x, and "B" is our unknown binomial

B=C-A Start with the given equation.


B=%283x%5E2-5x%29-%282x%5E2-x%29 Plug in C=3x%5E2-5x and A=2x%5E2-x


B=3x%5E2-5x-2x%5E2%2Bx Distribute


B=x%5E2-4x Combine like terms.


So the unknown binomial is x%5E2-4x

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!

If the sum of two numbers is 5, and one of them is 3, what is the other number?

Same thing here, just add the inverse of to

John