(ab)² is the same as writing:
(a x b)²
We know that a is 2 and that b is 3, so we substitute these into the expression:
(2 x 3)²
Then because of the Order of Operations we multiply INSIDE the brackets first:
(6)²
And when we square (²) a number we are simply multiplying it by itself:
(6)² = 6 x 6
So our final answer is:
6 x 6 = 36
