Question

what should be added to a² + 2ab + y² to obtain 3a² - ab?
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Answer 1

Answer:

-2a²+ab+y² should be added!!

Step-by-step explanation:

a²+2ab+y²-3a²-ab

= -2a²+ab+y²

HOPE IT HELPS!!

CAN I BE BRAINLIEST PLEASE???

THANKYOU!!

Answer 2

Answer:

2a² -3ab - y²

Step by step:

a² + 2ab + y² + ? = 3a² - ab

? = 3a² - ab -( a² + 2ab + y² )

? = 3a² - ab - a² - 2ab - y²

? = 3a² - a² - ab  - 2ab - y²

? = 2a² - 3ab -y²

( # I took ? for easy understanding, but you can take any other variable instead of it like x, y or z)

Hope it helps!