Asked/Added Questions From NCERT:


Question 1. Asked on :07 January 2019:02:26:38 PM

Find the sum : 3p2q2 - 4pq + 5, - 10p2q2, 15 + 9pq + 7p2q2

-Added by Master Purushottam Mathematics » Algebra Expreesion

Answer:

Akki chauhan

 3p2q2 - 4pq + 5 + (-10p2q2) + 15 + 9pq + 7p2q2 

= 3p2q2 + 7p2q2 - 10p2q2 + 9pq - 4pq + 5 + 15 

= 10p2q2 - 10p2q2 + 5pq + 20 

= 5pq + 20 Answer

-Answered by Akki chauhan On 10 January 2019:10:54:27 AM


Question 2. Asked on :07 January 2019:02:17:56 PM

 Putting x = 2 (i) In x + 4, we get the value of x + 4, i.e., x + 4 = 2 + 4 = 6

-Added by Master Purushottam Mathematics » Algebra Expreesion


Question 3. Asked on :07 January 2019:02:16:52 PM

If a = 2, b = -2, find the value of a2 + b2.

-Added by Master Purushottam Mathematics » Algebra Expreesion


Question 4. Asked on :07 January 2019:02:15:12 PM

 . Simplify the expressions and find the value if x is equal to 2 

  (i) x + 7 + 4 (x – 5)

-Added by Master Purushottam Mathematics » Algebra Expreesion

Answer:

Akki chauhan

 x+7+4(x-5)=2

x+7+4x-20=2

5x-13=2

5x=2+13

5x=15 

x=3

So, The value of x is 3. 

-Answered by Akki chauhan On 14 January 2019:10:15:24 AM


Question 5. Asked on :07 January 2019:02:14:21 PM

 simplify the expression and find its value when a = 5 and b = -3.

2(a2 + ab) + 3 - ab

-Added by Master Purushottam Mathematics » Algebra Expreesion


 

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