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Mathematics 9 Online
OpenStudy (ksaimouli):

differentiate

OpenStudy (ksaimouli):

\[-(2x+y) dx=(x+9y) dy\]

OpenStudy (ksaimouli):

@zepdrix

OpenStudy (ksaimouli):

This is exact but I don't know what step I missed. Let me explain what I did

OpenStudy (ksaimouli):

\[(-2x-y )dx= (x+9y )dy\]

OpenStudy (ksaimouli):

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