if A=3x²+2y+2 and B=6x²-8y+1, find A+B and A-B explanation with a+b a-b
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Step-by-step explanation:
A+B
=3x² +2y+ 2+6x² - 8y +1
=9x²-6y +3
A-B
=3x²+2y+ 2 -6x² + 8y- 1
=-3x² +10y +1
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