Question

Std: 9 

Sub: Maths  

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· Write tables 12 to 30 

· Use suitable identities to find the product of 

· (×+4)(×+10) 

· (×+8)(×-10) 

· (3×+4)(3×-5) 

· (3-2x)(3+2x) 

· Evaluate the following products without multiplying directly.  

a) 103×107 

b) 95×96 

c) 104×96 

· Factorise the following using appropriate identities. 

a) 9x2 +6xy+y2 

b) 4y2- 4y+1 

c) X2-y2/100 

· Classify the following as a linear, quadratic and cubic polynomial. 

x2 + x , x - x3 , y + y2 + 4 , 

7x3 , p2 , 3t 

· If p(x) = 5x – 4x2 +3 then find 

a)P(0) if x=0 

b) p(-1) if x= -1 

7. Factorise 

a) p2 - 5p – 24 

b) 2x2 – x - 6 

​

Answer 1

Answer:

Std: 9 

Sub: Maths  

--------------------------------------------- 

· Write tables 12 to 30 

· Use suitable identities to find the product of 

· (×+4)(×+10) 

· (×+8)(×-10) 

· (3×+4)(3×-5) 

· (3-2x)(3+2x) 

· Evaluate the following products without multiplying directly.  

a) 103×107 

b) 95×96 

c) 104×96 

· Factorise the following using appropriate identities. 

a) 9x2 +6xy+y2 

b) 4y2- 4y+1 

c) X2-y2/100 

· Classify the following as a linear, quadratic and cubic polynomial. 

x2 + x , x - x3 , y + y2 + 4 , 

7x3 , p2 , 3t 

· If p(x) = 5x – 4x2 +3 then find 

a)P(0) if x=0 

b) p(-1) if x= -1 

7. Factorise 

a) p2 - 5p – 24 

b) 2x2 – x - 6