Mathematics

Mathematics, 01.10.2019 22:40, gshreya2005

I'm pretty sure d) is supposed to be 3a^2 - 3b^2. where have i gone wrong?

I'm pretty sure d) is supposed to be 3a^2 - 3b^2. where have i gone wrong?

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I'm pretty sure d) is supposed to be 3a^2 - 3b^2. where have i gone wrong?
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