Select Board & Class
E.g: 9876543210, 01112345678
We will give you a call shortly, Thank You
Office hours: 9:00 am to 9:00 pm IST (7 days a week)
Syllabus
Q35. If a - b = 7 and a2 + b2 = 85, then find the value of a3 - b3.
Q.12. If 2x - 3y = 10 and xy = 16; find the value of .
Find the coefficient of x square in the expansion of (x square +2x+3) whole square +( x square - 2x+3) whole square
Please show me how to solve the answer taking (x square+3) as (a) and 2x as (b) and using the formula (a+b) whole square and (a-b) whole square
1.81*1.81-1.81*2.19+2.19*2.19
how did persian becaome an important language in india?
describe the origin and development of urdu as a new language in mideaval period?
name three urdu poets of mideaval period?
what was the outcome of bhakti movement?
mention two factors that contributed to the development of modern languages in the mideaval period?
name two poets of persian language during the sultanate period
Q24. Use (a –b)2 = a2 – 2ab + b2 to evaluate the following:
(i) (99)2 (ii) (997)2 (iii) (9.8)2.
Q25. By using suitable identities, evaluate the following:
(i) (103)3 (ii) (99)3 (iii) (10.1)3
Q26. If 2a – b + c = 0 , prove that 4a2 – b2 + c2 + 4ac = 0.
Hint. 2a – b + c = 0 2a + c = b (2a + c)2 = b2.
Q27. If a + b + 2c = 0. prove that a3 + b3 + 8c3 = 6abc.
Q28. If a + b + c = 0, then find the value of .
Q29. If x + y = 4, then find the value of x3 + y3 + 12xy – 64.
Q30. Without actually calculating the cubes, find the values of :
(i) (27)3 + (–17)3 + (–10)3 (ii) (–28)3 + (15)3 + (13)3.
Q31. Using suitable identify, find the value of :
14. A number consists of two digits , the difference of whose digits is 3. If 4 times the number is equal to 7 times the number obtained by reversing the digits, find the number.
[Hint. Original number is greater than the number obtained by reversing its digits. In original number, ten's digit is greater than unit's digit.]
(997)square
Please solve this.
Q. 2a + 3b = 7 and ab = 2 find .
Simplify the following :
(2p+3q)(4p square - 6pq +9q square)
In the equation ( 2x-3y+5)(2x-3y-5) in my book it's written to take (2x-3y) as (a) and apply the formula of (a+5)(a-5) but I wanted to ask whether we can also take 5 as b and apply the formula of (a+b)(a-b)= a square - b square
Please help me with this question as fast as possible....
(x+y-1) whole cube
If x square +1/4x square =8 find x cube +1/8x cube