\(B=20152015.20152017\)

\(B=\left(20152016-1\right)\left(20152016+1\right)\)

\(B=20152016^2-1\)

\(\Rightarrow A>B\)

1) \(\left(2x+3\right)\left(4x^2-6x+9\right)-2\left(4x^3-1\right)\)

\(=\left(2x\right)^3+3^3-8x^3+2\)

\(=25\)

10) \(f\left(3\right)-g\left(7\right)=\left(5.3+1\right)-\left(7-3.7\right)=30\)