expand (2a-1/3+4b)2
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Step-by-step explanation:
(2a)2 + (-1/3)2 + (4b)2 + 2*(2a)*(-1/3) + 2*(-1/3)*(4b) + 2*(2a)*(4b)
4a2 + 1/9 + 16b2 - 4a/3 - 8b/3 + 16ab
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