x − 3 x 2 + 6 x − 27 = x − 3 x 2 + 6 x + 3 x − 3 x − 27 = x − 3 x 2 + 9 x − 3 x − 27 = = x − 3 x ( x + 9 ) − 3 ( x + 9 ) = x − 3 ( x + 9 ) ( x − 3 ) = x + 9 x − 3 = 0 x = 3 D = R ∖ { 3 }
Using long division, the quotient of ( x 2 + 6 x − 27 ) ÷ ( x − 3 ) is x + 9 with no remainder. The process involves dividing, multiplying, and subtracting until the remainder is zero. Thus, the final answer is x + 9 .
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