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(D2+6d+9)+(d3-6d+9) ​
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(D2+6d+9)+(d3-6d+9) ​

User Twinj
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1 Answer

2 votes
You can’t add d2 or d3 so ignore it for now u will subtract -6d from +6d to get 0 then add 9+9
Answer:
d3+ d2 + 18

D3 has to be in front because it has a larger exponent
User Scott Nelson
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