Question

Question 7
Subtract-2x2 + 5xy + 4y2 from the sum
of x² - 2xy + y² and 3x² + 4xy - y²

Answer 1

Answer: 6x² - 3xy - 4y²

Explanation:

The sum of x² - 2xy + y² and 3x² + 4xy - y² is:

(x² - 2xy + y²) + (3x² + 4xy - y²)

Simplifying and combining like terms, we get:

4x² + 2xy

Now, we need to subtract -2x² + 5xy + 4y² from this sum. To do this, we can change the sign of each term in -2x² + 5xy + 4y² and then add:

4x² + 2xy + (2x² - 5xy - 4y²)

Simplifying and combining like terms, we get:

6x² - 3xy - 4y²

Therefore, the answer is 6x² - 3xy - 4y².