Free · Class 9–10 · 9 worksheets · answer keys · practise online · set 16
Polynomials worksheets — Class 9 and 10, with answers
Free polynomials worksheets for Class 9 and 10: degree, value of a polynomial, zeroes, remainder theorem, multiplying and factorising quadratics, and sum and product of zeroes — with answers.
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The degree is the highest power of x: 4x³ − 2x + 7 has degree 3. Degree 1 = linear, 2 = quadratic, 3 = cubic. Value p(a): put a in place of x. If p(a) = 0, then a is a zero of p(x).Remainder theorem : the remainder when p(x) is divided by (x − a) is p(a). Factor theorem : if p(a) = 0, then (x − a) is a factor.Factorise x² + bx + c: find two numbers that multiply to c and add to b — x² + 5x + 6 = (x + 2)(x + 3). For ax² + bx + c (Class 10): sum of zeroes = −b/a, product = c/a.
Degree of a polynomial (Class 9) Value of a polynomial (Class 9) Zero of a polynomial (Class 9) Remainder theorem (Class 9) Multiply (Class 9) Factorise x² + bx + c (Class 9) Factorise ax² + bx + c (Class 9–10) Zeroes of a quadratic (Class 10) Sum and product of zeroes (Class 10)
Degree of a polynomial Class 9 · Worksheet 1 · set 16
Name: Date: Score: / 10
Write the degree.
Degree of 2x⁵ − 6x Degree of −7x³ − 8 Degree of −5x⁴ − 8x³ + x + 7 Degree of 2x⁶ − 2x⁵ + 7x⁴ + 9x³ + 6x² + 9x − 5 Degree of 2x⁴ − 7x³ + 6x² + 2 Degree of 6x⁵ − 8 Degree of −6x⁶ + x⁵ − 9x⁴ + 9x² + 5x Degree of −5x − 7 Degree of −8x⁵ + 9x⁴ + 9x Degree of 2x⁶ − 9x²
✅ Answer key — Degree of a polynomial
5 3 4 6 4 5 6 1 5 6
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Value of a polynomial Class 9 · Worksheet 2 · set 16
Name: Date: Score: / 8
Find the value.
p(x) = 2x² − 4x. Find p(−3). p(x) = −4x² + 7x + 7. Find p(−3). p(x) = −2x² + 9x + 7. Find p(0). p(x) = x² + 8x + 2. Find p(3). p(x) = 5x² − 6x + 7. Find p(−3). p(x) = −2x² + 9x − 3. Find p(−1). p(x) = −3x² − 5x + 7. Find p(−3). p(x) = 5x² − x + 2. Find p(1).
✅ Answer key — Value of a polynomial
30 −50 7 35 70 −14 −5 6
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Zero of a polynomial Class 9 · Worksheet 3 · set 16
Name: Date: Score: / 8
Answer Yes or No.
Is x = 3 a zero of p(x) = x² − x − 6? Is x = −5 a zero of p(x) = x² − 7x + 6? Is x = 3 a zero of p(x) = x² − 2x − 15? Is x = −6 a zero of p(x) = x² + x − 30? Is x = 5 a zero of p(x) = x² + 3x − 18? Is x = −1 a zero of p(x) = x² + 2x − 15? Is x = −5 a zero of p(x) = x² + 11x + 30? Is x = 6 a zero of p(x) = x² − 3x − 18?
✅ Answer key — Zero of a polynomial
Yes No No Yes No No Yes Yes
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Remainder theorem Class 9 · Worksheet 4 · set 16
Name: Date: Score: / 8
Find the remainder.
Remainder when 4x³ − 4x² + 5x + 6 is divided by (x + 1) Remainder when 2x³ + 4x² + 4x − 8 is divided by (x + 2) Remainder when 4x³ − 2x² − 9x − 8 is divided by (x − 3) Remainder when 2x³ − x² + 3x is divided by (x − 1) Remainder when x³ + 2x is divided by (x − 3) Remainder when 4x³ − 9x + 9 is divided by (x − 1) Remainder when 2x³ − 4x² + 6x + 7 is divided by (x + 1) Remainder when x³ − x² − 3x − 7 is divided by (x + 3)
✅ Answer key — Remainder theorem
−7 −16 55 4 33 4 −5 −34
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Multiply Class 9 · Worksheet 5 · set 16
Name: Date: Score: / 10
Multiply using (x + a)(x + b) = x² + (a + b)x + ab.
(x + 8)(x − 7) (x + 4)(x − 5) (x − 2)(x + 6) (x − 8)(x − 9) (x + 5)(x − 8) (x + 5)(x + 4) (x + 2)(x − 7) (x − 1)(x − 8) (x + 1)(x + 7) (x + 4)(x + 1)
✅ Answer key — Multiply
x² + x − 56 x² − x − 20 x² + 4x − 12 x² − 17x + 72 x² − 3x − 40 x² + 9x + 20 x² − 5x − 14 x² − 9x + 8 x² + 8x + 7 x² + 5x + 4
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Factorise x² + bx + c Class 9 · Worksheet 6 · set 16
Name: Date: Score: / 10
Factorise.
x² − 7x + 12 x² + 16x + 63 x² − 14x + 49 x² − 6x + 8 x² − 3x − 10 x² + 14x + 45 x² + x − 30 x² − 4x − 12 x² + 2x + 1 x² + 9x + 8
✅ Answer key — Factorise x² + bx + c
(x − 4)(x − 3) (x + 7)(x + 9) (x − 7)(x − 7) (x − 4)(x − 2) (x − 5)(x + 2) (x + 5)(x + 9) (x − 5)(x + 6) (x − 6)(x + 2) (x + 1)(x + 1) (x + 1)(x + 8)
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Factorise ax² + bx + c Class 9–10 · Worksheet 7 · set 16
Name: Date: Score: / 8
Factorise by splitting the middle term.
3x² + 2x − 5 5x² + 41x + 42 4x² − 19x + 12 5x² − 41x + 42 5x² + 27x − 18 4x² − 9x + 5 4x² − 19x − 30 4x² + 9x + 5
✅ Answer key — Factorise ax² + bx + c
(3x + 5)(x − 1) (5x + 6)(x + 7) (4x − 3)(x − 4) (5x − 6)(x − 7) (5x − 3)(x + 6) (4x − 5)(x − 1) (4x + 5)(x − 6) (4x + 5)(x + 1)
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Zeroes of a quadratic Class 10 · Worksheet 8 · set 16
Name: Date: Score: / 8
Find the zeroes of each polynomial.
x² + 2x − 3 x² + 2x − 48 x² + 15x + 54 x² + x − 56 x² − 3x − 18 x² − 5x − 24 x² − 7x − 18 x² − 12x + 32
✅ Answer key — Zeroes of a quadratic
−3 and 1 −8 and 6 −9 and −6 −8 and 7 −3 and 6 −3 and 8 −2 and 9 4 and 8
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Sum and product of zeroes Class 10 · Worksheet 9 · set 16
Name: Date: Score: / 8
Find the sum and the product of the zeroes.
Sum and product of the zeroes of 4x² + 7x + 1 Sum and product of the zeroes of 2x² − 11x + 4 Sum and product of the zeroes of 6x² − 3x + 11 Sum and product of the zeroes of 5x² + 2x − 6 Sum and product of the zeroes of 3x² − 4x + 4 Sum and product of the zeroes of 2x² − 5x − 9 Sum and product of the zeroes of 6x² + 5x − 2 Sum and product of the zeroes of 4x² − x + 8
✅ Answer key — Sum and product of zeroes
sum = −7/4, product = 1/4 sum = 11/2, product = 2 sum = 1/2, product = 11/6 sum = −2/5, product = −6/5 sum = 4/3, product = 4/3 sum = 5/2, product = −9/2 sum = −5/6, product = −1/3 sum = 1/4, product = 2
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Questions
What is the zero of a polynomial? A value of x that makes the polynomial equal to 0. For x² − 5x + 6 = (x − 2)(x − 3), the zeroes are 2 and 3.
What is the remainder theorem? When p(x) is divided by (x − a), the remainder is p(a) — so you can find the remainder without long division.
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