CBSE Class 9 Maths Exploring Algebraic Identities (Class 9 NCERT New) Quiz 6

1. (a+b)2

A a2 + b2 B a2 + b2 + 2ab C a2 b2 + 2ab D a2 + b2 - 2ab

2. Expand and simplify : (t - 7) (t+7)

A t2 +49 B t2 - 14 t -49 C t2 - 7 t -49 D t2 -49

3. Factorise x²+4x

A x(x+4) B 4x(x+1)

4. Factorise 2x+8

A 2(x+4) B 2(x+8)

5. Factorise 4x+12

A 4(x+3) B 4(x+12)

6. Factorise 3x²+12x

A 3x(x+4) B 3(x²+4)

7. Factorise thesex2-12x+36

A (x-6)2 B (x-4)(x-9) C (x-6)(x+6) D (x+6)(x-6)

8. Difference of squaresFactor x2-16

A (x-4)(x+4) B (x-4)(x-4) C (x+4)(x+4) D (x+4){x-(-4)}