subtract 9x² - 8y² + 6y - 7 from 12x² - 9xy + 7y² - 3y
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Step-by-step explanation:
3x^2 -15y^2 +9y -7 -9xy
^ 2 means square
Answered by
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Answer: 3x²-9xy-9y+15y²+7
Q. subtract 9x² - 8y² + 6y - 7 from 12x² - 9xy + 7y² - 3y
Solution:- first we have to arrange the question according to its coefficient and its power.
see here how to arrange,
( 12x² - 9xy + 7y² - 3y) - ( 9x² +6y - 8y² - 7 )
= 3x²-9xy-9y+15y²+7 ( Answer)
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