Step 1: Apply BIDMAS rule that stands for Brackets, Indices, Division and Multiplication, and Addition and Subtraction from left to right.
Step 2: First, we simplify the terms in brackets. Calculate the sum of 5 + 1 to get 6, and the sum of 11 + 3 to get 14.
Step 3: Then take the square of 6 (which is 36) as per the indices rule.
Step 4: Now, subtract 14 from 36 to rule out the subtraction part in the formula. This will give a result of 22.
Step 5: Finally, add 4 to 22 as per the additional rule to get the final result. This would add up to 26.
So, the simplified value of the expression (5 + 1)2 – (11 + 3) + 4 is 26.