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(6a3+7a2)−(5a3+9a2+a)=(6a^3+7a^2) -(5a^3+9a^2+a)=

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Q. (6a3+7a2)−(5a3+9a2+a)=(6a^3+7a^2) -(5a^3+9a^2+a)=
  1. Subtract like terms: Subtract the like terms.\newlineSubtract the coefficients of the like terms, which are the terms with the same power of aa.\newlineFor a3a^3 terms: 6a3−5a3=1a36a^3 - 5a^3 = 1a^3 or simply a3a^3.\newlineFor a2a^2 terms: 7a2−9a2=−2a27a^2 - 9a^2 = -2a^2.\newlineFor aa terms: There is no 'aa' term in the first expression, so we just have −a-a from the second expression.
  2. Combine results: Combine the results from Step 11.\newlineCombine the simplified terms to get the final expression.\newlinea3−2a2−aa^3 - 2a^2 - a.

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