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64\left(x^{3}-3x^{2}+3x-1\right)-2
Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(x-1\right)^{3}.
64x^{3}-192x^{2}+192x-64-2
Use the distributive property to multiply 64 by x^{3}-3x^{2}+3x-1.
64x^{3}-192x^{2}+192x-66
Subtract 2 from -64 to get -66.
64\left(x^{3}-3x^{2}+3x-1\right)-2
Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(x-1\right)^{3}.
64x^{3}-192x^{2}+192x-64-2
Use the distributive property to multiply 64 by x^{3}-3x^{2}+3x-1.
64x^{3}-192x^{2}+192x-66
Subtract 2 from -64 to get -66.