Question Paper
Class / Subject: Class 9 (ICSE) · Mathematics
Chapter: Chapter 4 — Chapter 4: Expansions (Algebraic Identities)
Time Allowed: 32 minutes
Max Marks: 16
1. What is (a+b)²? [1]
(A) a² + 2ab + b²
(B) a² + b²
(C) a² - 2ab + b²
(D) 2a + 2b
2. What is (a-b)²? [1]
(A) a² - 2ab + b²
(B) a² + b²
(C) a² + 2ab + b²
(D) 2a - 2b
3. What is (a+b)(a-b)? [1]
(A) a² - b²
(B) a² + b²
(C) a² + 2ab
(D) 2a - 2b
4. What is (x+5)²? [1]
(A) x²+10x+25
(B) x²+25
(C) x²+5x+25
(D) x²+10x
5. What is (x-3)²? [1]
(A) x²-6x+9
(B) x²+9
(C) x²-6x
(D) x²-3x+9
6. What is (x+7)(x-7)? [1]
(A) x²-49
(B) x²+49
(C) x²-14x
(D) x²+14x
7. What does (a+b+c)² include? [1]
(A) Squares and cross product terms
(B) Only squares
(C) Only cross products
(D) Nothing specific
8. Why use algebraic identities? [1]
(A) To speed up expansion and simplification
(B) To slow down calculations
(C) No reason
(D) Only for tests
9. What is (a+b)²? [1]
(A) a² + 2ab + b²
(B) a² + b²
(C) a² - 2ab + b²
(D) 2a + 2b
10. What is (a-b)²? [1]
(A) a² - 2ab + b²
(B) a² + b²
(C) a² + 2ab + b²
(D) 2a - 2b
11. What is (a+b)(a-b)? [1]
(A) a² - b²
(B) a² + b²
(C) a² + 2ab
(D) 2a - 2b
12. What is (x+5)²? [1]
(A) x²+10x+25
(B) x²+25
(C) x²+5x+25
(D) x²+10x
13. What is (x-3)²? [1]
(A) x²-6x+9
(B) x²+9
(C) x²-6x
(D) x²-3x+9
14. What is (x+7)(x-7)? [1]
(A) x²-49
(B) x²+49
(C) x²-14x
(D) x²+14x
15. What does (a+b+c)² include? [1]
(A) Squares and cross product terms
(B) Only squares
(C) Only cross products
(D) Nothing specific
16. Why use algebraic identities? [1]
(A) To speed up expansion and simplification
(B) To slow down calculations
(C) No reason
(D) Only for tests