$\"\"$

\

The expression is $\"\"$ .

\

$\"\"$ (Formula: $\"\"$ )

\

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

\

The base is 1.

\

The exponent is 2.

\

$\"\"$ Means 1 is a factor of 2 times.

\

$\"\"$

\

$\"\"$

\

The base is 4.

\

The exponent is 2.

\

$\"\"$ Means 4 is a factor of 2 times.

\

$\"\"$

\

$\"\"$

\

Substitute values $\"\"$ in above equation.

\

$\"\"$

\

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

\

$\"\"$ (Add: 1 + 16 = 17)

\

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

\

$\"\"$

\

The value of the expression is 9.