а) t^2 + 2tm + m^2
б) t^2-2*3t+9 = t^2-6t+9
в) 4t^2+4t+1
г) 9m^2-12mt+4t^2
д) 9m^4+6m^2*t^3+t^6
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а) t^2 + 2tm + m^2
б) t^2-2*3t+9 = t^2-6t+9
в) 4t^2+4t+1
г) 9m^2-12mt+4t^2
д) 9m^4+6m^2*t^3+t^6