Question

(3a-1/2)(3a-1/2) =?​

Answer 1

(3a-1/2) (3a-1/2)

(3a-1/2)²

using identity

(a-b)²=a²+b²-2ab

(3a-1/2)²=(3a)²+(1/2)²-2(3a)(1/2)

= 9a²+1/4-3a

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