2) if. A = 3x² +
3 x² + 2y +2 and B=6x² - 3y +1,
Then find A+B and A-B
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Answer:
A = 3x² + 2y +2
B = 6x² - 3y +1
1) A - B
= 3x² + 2y +2 + 6x² - 3y +1
= (3+6)x² + (2-3)y + (2+1)
= 9x² - y + 3
2) A - B
= 3x² + 2y +2 - (6x² - 3y +1)
= 3x² + 2y + 2 - 6x² + 3y - 1
= (3-6)x² + (2+3)y + (2-1)
= -3x² + 5y + 1
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