1.

(3a+b/2)2 = (3a)^2 (3a)(b/2)+b^2​

Answer»

(3a-b)^2 - 9c^2 => (3a-b)^2 - (3C)^2 = (3a-b+3c)(3a-b-3c)Step-by-step EXPLANATION:



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