Question

What must be added to 3x² - 7xy + 5y² to make the sum equal to x² + 4xy - 2y²​

Answer 1

Step-by-step explanation:

hope it will help you ....

Answer 2

Solution :-

Let the number be x.

ATQ,

x + 3x² - 7xy + 5y² = x² + 4xy - 2y²

x = x² + 4xy - 2y² - 3x² - 7xy + 5y²

x = -2x² + 11xy - 7y²

Hence, $\pink{\sf{\fbox{\underline{ {-2x}^{2} + 11xy {-7y}^{2} }}}}$ must be added to 3x² - 7xy + 5y² to make the sum equal to x² + 4xy - 2y².