Question

What must be subtracted from 3a²– 5ab – 2b²– 3 to get 5a² - 7ab - 3b² + 3a​

Answer 1

Answer:

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Step-by-step explanation:

let the value which has to be subtracted be x

therefore

3a^2 - 5ab -2b^2 - 3 -x = 5a^2 -7ab -3b^2 +3a

therefore x = -2a^2 + 2ab + b^2 - 3a -3

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Answer 2

Answer:

Step-by-step explanation:

3a^2  -5ab -2b^2   -3

5a^2  -7ab   -3b^2  +0      +3a

-          +         +         -         -

-2a^2  +2ab   +b^2   - 3      -3a

Therefore -2a^2+ 2ab + b^2 -3a -3 should be subtracted .