What should be added to x2 – y2 + 2xy to obtain x2 + y2 + 5xy?
Solution:

What should be subtracted from -7mn + 2m2 + 3n2 to get m2 + 2mn + n2?
Solution:

More Solutions:
- From the algebraic expressions.
- Write down the algebraic expression whose terms.
- Identify the terms and their factors in the algebraic expressions.
- Show the terms and their factors by tree diagrams.
- Write down the numerical coefficient of each of the following:
- In -7xy2z3, write down the coefficient: