Question

what should be subtracted from 4a²-5b² to get a²-b²​

Answer 1

Answer:

Let the expression to be subtracted be equal to X. It contains terms a², b², and ab.

3 a^2 - 4 b^2 + 5 a b - X = - a^2 - b^2 + 6 a b \\  

Take X to the right side, and Bring the expression on the right to the left side of equal to.

3 a^2 - 4 b^2 + 5 a b + a^2 + b^2 - 6 a b = X \\  

Add the similar terms

Step-by-step explanation:

Answer 2

Answer:

3a²-4b² should be subtracted from 4a²-5b² to get a²-b².

Step-by-step explanation:

4a²-5b²

- 3a²-4b²

--------------

= a²-b²

--------------