Answers

2014-11-24T15:35:36+05:30
9a 2-12a +4 By using (a-b)^2 identity (3a)2 -2.3a.2 +(2)^2 =(3a-2)^2
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  • Brainly User
2014-11-24T15:38:01+05:30
Identity: (a-b)^2 = a^2 - 2ab + b^2

9a^2 - 12a + 4
=(3a)^2 - 2*3a*2 + (2)^2
=(3a -2)^2
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hope it helps you!!
lichen i think u have to simplify it more
u can simplify by a-b^2