FIND THE PRODUCT OF:
3a{(2a – 1)^2 - (2a – 1) (a + 1) + (a + 1)^2)}.
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Answer:
3a{4a-2-2a^2+a-2a+1+(a^2+2a+1)}
3a(5a-a^2)
15a^2-3a^3
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