$\"\"$

Consider $\"\"$ .

Write the function in the form of $\"\"$ and simplify by combinding terms.

$\"\"$ (Original function)

$\"\"$ (Substitute $\"\"$ in the function)

$\"\"$ (Apply distributive property: $\"\"$ )

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

$\"\"$ (Addition: $\"\"$ )

$\"\"$ .

Therefore,the function is $\"\"$ .

$\"\"$

The function is $\"\"$ .