5. What should be subtracted from 6xy - 5y2 + 4x2
to get 7x2 - 4y - 7xy?
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Answer:
Add both the equations by arranging variables in proper order.
Step-by-step explanation:
= 6xy - 5y2 + 4x2 + 7x2 - 4y2 - 7xy
= 6xy - 7xy - 5y2 - 4y2 + 4x2 + 7x2
= -xy - 9y2 + 11x2
:. 11x2 - 9y2 - xy
Arrange this as per your requirements.
If you subtract the answer from 6xy... then you will get 7x2 - 4y2 - 7xy.
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