Question 171478: 1. (-7x2 + 5xy - 2y2) + (3x2 - 5xy - 4y2)
Answer by midwood_trail(310)   (Show Source):
You can put this solution on YOUR website! (-7x^2 + 5xy - 2y^2) + (3x^2 - 5xy - 4y^2)
We are adding two polynomials here.
We combine like terms all the way through.
-7x^2 + 3x^2 + 5xy - 5xy - 2y^2 - 4y^2
Notice that I placed all like terms together.
Simplify part by part.
-7x^2 + 3x^2 = -4x^2
5xy - 5xy = 0
- 2y^2 - 4y^2 = -6y^2
We put it all together and get -4x^2 - 6y^2
Of course, we can factor -4x^2 - 6y^2.
I'll let you that.
If cannot, then write back.
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