A
(a2 + 2a + 2)(a2 - 2a - 2)
B
(a2 + 2a + 2)(a2 - 2a + 2)
C
(a2 - 2a + 2)(a2 + 2a - 2)
D
(a2 - 2a - 2)(a2 - 2a + 2)
উত্তরের বিবরণ
a4 + 4 এর উৎপাদক কী কী?
সমাধান:
a4 + 4
= a4 + 4 + 4a2 - 4a2
= (a2)2 + 2.a2. 2 + 22 - 4a2
= (a2 + 2)2 - (2a)2
= (a2 + 2 + 2a)(a2 + 2 - 2a)
=(a2 + 2a + 2)(a2 - 2a + 2)
0
Updated: 2 months ago
(a2 + b2- c2 + 2ab)/(a2 - b2 + c2 + 2ac) = কত?
Created: 1 month ago
A
a + b + c
B
(a + b - c)/(a - b + c)
C
(a - b + c)/(a + b - c)
D
(a + b - c)/(a + b + c)
প্রশ্ন: (a2 + b2 - c2 + 2ab)/(a2 - b2 + c2 + 2ac) = কত?
সমাধান:
(a2 + b2 - c2 + 2ab)/( a2 - b2 + c2 + 2ac)
= [(a + b)2 - c2]/[(a + c)2 - b2]
= [(a + b + c)(a + b - c)]/ [(a + b + c)(a - b + c)]
= (a + b - c)/(a - b + c)
0
Updated: 1 month ago
Created: 4 days ago
A
3/2
B
2/3
C
5/2
D
2/5
প্রশ্ন:
সমাধান:
0
Updated: 4 days ago
যদি (x - 5)(a + x) = x2 - 25 হয়, তবে a এর মান কত?
Created: 2 months ago
A
- 5
B
5
C
25
D
- 25
প্রশ্ন: যদি (x - 5)(a + x) = x2 - 25 হয়, তবে a এর মান কত?
সমাধান:
(x - 5) (a + x) = x2 - 25
⇒ (x - 5) (a + x) = (x - 5)(x + 5)
⇒ a + x = x + 5
∴ a = 5
0
Updated: 2 months ago
