Q1 of 227 Page 84

Find the quotient and remainder using synthetic division.

(3x3 + 4x2 10x + 6) ÷ ( 3x – 2)

Let p(x) = 3x3 + 4x2 10x + 6 be the dividend and arranging p(x) according to the descending powers of x.


Divisor, q(x) = 3x – 2


To find out Zero of the divisor –


q(x) = 0


3x – 2= 0


x =


So, zero of divisor is .


And, p(x) = 3x3 + 4x2 10x + 6


Put zero for the first entry in the second row.



p(x) = (Quotient)×q(x) + remainder.


So, 3x3 + 4x2 10x + 6 = (x – )(3x2 + 6x – 6) + 2


= (3x – 2)(3x2 + 6x – 6) + 2


Thus, the Quotient = (3x2 + 6x – 6)= x2 + 2x – 2 and remainder is 2.


Hence, when p(x) is divided by (3x – 2) the quotient is x2 + 2x – 2 and remainder is 2.


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