1.

12(x​​​​​​2​​​+7)2-8(x​​​​​​2​​​​​+7)2(2x-1)-15(2x-1)2

Answer»

12(x​​​​​​2​​​+7)2-8(x​​​​​​2​​​​​+7)2(2x-1)-15(2x-1)2



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