Evaluate the following. \[ 2.1^{2}-0.6 \times 2.3 \]

To evaluate \( 2.1^{2}-0.6 \times 2.3 \), we begin by calculating \( 2.1^{2} \): \[ 2.1^{2} = 2.1 \times 2.1 = 4.41 \] Next, we calculate \( 0.6 \times 2.3 \): \[ 0.6 \times 2.3 = 1.38 \] Now, we can substitute these values into the expression: \[ 4.41 - 1.38 \] Finally, we perform the subtraction: \[ 4.41 - 1.38 = 3.03 \] Thus, the result is \[ \boxed{3.03} \]