$\"\"$

\

Original function is $\"\"$ .

\

Replace x = 4 in original function.

\

$\"\"$ \ \

\

$\"\"$ (Evaluate powers: $\"\"$ )

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$ (Commutative property: a + b = b + a)

\

$\"\"$ (Add: 256 + 32 = 288) \ \

\

$\"\"$ (Subtract: $\"\"$ )

\

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

\

Replace x = $\"\"$ 2 in original function.

\

$\"\"$

\

$\"\"$ (Evaluate powers: $\"\"$ )

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$ (Add: 16 + 56 = 72)

\

$\"\"$ (Subtract: $\"\"$ )

\

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

\

$\"\"$ , and $\"\"$ .