When evaluated, the following expression 1203² is resolved into 1,447,209.
To evaluate 1203² without the use of calculator, we made use of algebraic identity (a + b)² = a² + 2ab + b².
In this case,
a = 1200 and
b = 3
1203² = (1200 + 3) ²
= 1200 + 2 x 1200 x 3 + 3²
= 1440000 + 7200 + 9
Adding or summing up the numbers, we have: 1,447,209. It is correct, therefore, to state that 1203² = 1,447,209.