Question
Verify the division algorithm i.e., Dividend = Divisor × Quotient + Remainder, in the following. Also write the quotient and remainder.
Dividend: $15\text{y}^4-16\text{y}^3+9\text{y}^2-\frac{10}{3}\text{y}+6$
Divisor: $3\text{y}-2$

Answer


Quotient $5\text{y}^3-2\text{y}^2+\frac{5}{3}\text{y}$
Remainder $=6$
Divisor $=3\text{y}-2$
Divisor × Quotient + Remainder $=\Big(3\text{y}-2\Big)\Big(5\text{y}^3-2\text{y}^2+\frac{5}{3}\text{y}\Big)+6$
$156\text{y}^4-6\text{y}^3+5\text{y}^3+4\text{y}^2-\frac{10}{3}\text{y}+6$
$=15\text{y}^4-16\text{y}^3+9\text{y}^2-\frac{10}{3}\text{y}+6$
$=\text{Dividend}$
Divisor × Quotient + Remainder = Dividend
Hence verified.

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