3a^2-2b^2 using identity
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Step-by-step explanation:
The first one is in the form of (a-b)^2. So, if we solve the first one we get 9a^2+4b^2-12ab. Next one is in tge form pf (a+b)^2. So, if we solve that we get 9a^2+4b^2+12qb.
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