what should be added to 3 x cube - 5 x square + 7 x - 6 to obtain :
x cube - 2 x square - x + 9 ?
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Answer:
To get what should be added we need to subtract the two given.
3xcube-5xsquare+7x - 6
-xcube+2xsquare+x-9
=2xcube-3xsquare+8x-15
Hence,the equation to be added is 2xcube-3xsquare+8x-15
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