a) \(\left(6x-2\right)^2+2.\left(6x-2\right).\left(1-6x\right)+\left(1-6x\right)^2\)
\(=\left[\left(6x-2\right)+\left(1-6x\right)\right]^2\)
\(=\left(6x-2+1-6x\right)^2\)
\(=\left(-1\right)^2=1\)
Vậy...
b) \(\left(2x-3\right)^2-4x^2+12x+1\)
\(=4x^2-12x+9-4x^2+12x+1\)
\(=10\)
Vậy...
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