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Question

Factroise: 4a2+9b2+c212ab6bc+4ac

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Solution

Formula: (a+bc)2=a2+b2+c2+2ab2bc2ca

Given,

4a2+9b2+c212ab6bc+4ac

=(2a)2+(3b)2+(1c)22(2a)(3b)2(3b)(1c)+2(2a)(1c)

=(2a+3bc)2

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