SOLUTION: Please help me,I am totally confused with this. What is the difference between 2x^2+4xy-3 and x^2-2xy-4 Please help me!

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Please help me,I am totally confused with this. What is the difference between 2x^2+4xy-3 and x^2-2xy-4 Please help me!      Log On


   

Question 128178: Please help me,I am totally confused with this.
What is the difference between 2x^2+4xy-3 and x^2-2xy-4
Please help me!
Answer by marcsam823(57) About Me  (Show Source):
You can put this solution on YOUR website!
To find the difference of two expressions subtract one from the other:
%282x%5E2+%2B+4xy+-+3%29+-+%28x%5E2+-+2xy+-+4%29
Multiply the second parentheses by the negative:
2x%5E2+%2B+4xy+-+3+-+x%5E2+%2B+2xy+-+4
Combine like terms to find your answer:
x%5E2+%2B+6xy+-+7