SOLUTION: 1. (-7x^2 + 5xy - 2y^2) + (3x^2 - 5xy - 4y^2)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 1. (-7x^2 + 5xy - 2y^2) + (3x^2 - 5xy - 4y^2)       Log On


   

Question 171482: 1. (-7x^2 + 5xy - 2y^2) + (3x^2 - 5xy - 4y^2)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%28-7x%5E2+%2B+5xy+-+2y%5E2%29+%2B+%283x%5E2+-+5xy+-+4y%5E2%29 Start with the given expression


-7x%5E2+%2B+5xy+-+2y%5E2+%2B+3x%5E2+-+5xy+-+4y%5E2 Remove the parenthesis.


%28-7x%5E2%2B3x%5E2%29%2B%285xy-5xy%29%2B%28-2y%5E2-4y%5E2%29 Group like terms


-4x%5E2-6y%5E2 Combine like terms


So %28-7x%5E2+%2B+5xy+-+2y%5E2%29+%2B+%283x%5E2+-+5xy+-+4y%5E2%29=-4x%5E2-6y%5E2