A
{1, 2, 5}
B
{1, 5, 6}
C
{4, 5, 6}
D
{2, 6}
উত্তরের বিবরণ
প্রশ্ন: যদি P = {1, 2, 3, 4, 5, 6}, Q = {2, 3, 4, 6} এবং R = {1, 5, 6} হয়, তবে (P - Q) ∪ R = কত?
দেওয়া আছে,
P = {1, 2, 3, 4, 5, 6},
Q = {2, 3, 4, 6} এবং
R = {1, 5, 6}
এখন,
P - Q = {1, 2, 3, 4, 5, 6} - {2, 3, 4, 6}
= {1, 5}
= {1, 5} ∪ {1, 5, 6}
= {1, 5, 6}
0
Updated: 16 hours ago
যদি
Created: 3 days ago
A
47
B
49
C
51
D
57
0
Updated: 3 days ago
Created: 1 week ago
A
1
B
-1
C
a-1
D
a+1
প্রশ্ন: 
সমাধান:
0
Updated: 1 week ago
2(a2 + b2) = কত?
Created: 17 hours ago
A
(a + b)2 - 4ab
B
(a + b)2 - (a - b)2
C
(a - b)2 - (a + b)2
D
(a + b)2 + (a - b)2
প্রশ্ন: 2(a2 + b2) = কত?
সমাধান:
আমরা জানি,
a2 + b2 = (a + b)2 - 2ab
বা, a2 + b2 = (a - b)2 + 2ab
বা, a2 + b2 = {(a + b)2 + (a - b)2}/2
বা, 2(a2 + b2) = (a + b)2 + (a - b)2
∴ 2(a2 + b2) = (a + b)2 + (a - b)2
0
Updated: 17 hours ago
