1 of 3

Sol.

Exercise 2.3

Give examples of polynomials p(x), g(x), q(x) and r(x)

which satisfy the division algorithm and

1.

(i) deg p(x) = deg q(x)

p(x)

=

2x²

2x

+

14,

g(x)

=

2

q(x)

=

x²

x

+

7,

r(x)

=

0

Dividend = Divisor × Quotient + Remainder

x

+

7

2ge2

2x

+

14

2x

+

14

14

(–)

0

2

2x2 – 2x + 14

x2

2

2

2

x

+

7

x2

0

(i) deg p(x) = deg q(x)

(ii) deg q(x) = deg r(x)

(iii) deg r(x) = 0

2 of 3

Sol.

Exercise 2.3

Give examples of polynomials p(x), g(x), q(x) and r(x)

which satisfy the division algorithm and

1.

(i) deg p(x) = deg q(x)

p(x)

=

2x²

2x

+

14,

g(x)

=

2

q(x)

=

x²

x

+

7,

r(x)

=

0

(i) deg p(x) = deg q(x)

(ii) deg q(x) = deg r(x)

(iii) deg r(x) = 0

(ii) deg q(x) = deg r(x)

x

+

1

x3

x

(–)

(+)

x2

+

2x

+

1

x2

1

(–)

(+)

2x

+

2

x3 + x2 + x + 1

x² – 1

2x

+

2

1

x² – 1

x

+

1

x3 + x2 + x + 1

p(x)

=

x³

+

x²

+

x

+

1,

g(x)

=

x²

1

q(x)

=

x

+

1,

r(x)

=

2x

+

2

1

3 of 3

Sol.

Exercise 2.3

Give examples of polynomials p(x), g(x), q(x) and r(x)

which satisfy the division algorithm and

1.

(i) deg p(x) = deg q(x)

(ii) deg q(x) = deg r(x)

(iii) deg r(x) = 0

(iii) deg r(x) = 0

x2

+

1

x3

+

2x2

(–)

(–)

x

+

2

x

+

2

(–)

(–)

0

x3 + 2x2 + x + 2

x + 2

x3 + 2x2 + x + 2

x + 2

x2

+

1

0

=

p(x)

x³

+

2x²

+

x

+

2,

q(x)

=

x²

+

1

=

g(x)

x

+

2,

r(x)

=

0

(ii) deg q(x) = deg r(x)

p(x)

=

x³

+

x²

+

x

+

1,

g(x)

=

x²

1

q(x)

=

x

+

1,

r(x)

=

2x

+

2