Rewrite the expression in long division form .

Divide the first term of the dividend by the first term of the divisor

So the first term of the quotient is a. Multiply the by a and subtract.

Divide the first term of the last row by the first term of the divisor

So the next term of the quotient is . Multiply the (a + 1) by and subtract.

The quotient is  – 2a – 6, and the remainder is – 6. Therefore,

.