Easy
1 point
ID: #28412
Question
x + y = 2 এবং x² + y² = 4 হলে, x³ + y³ এর মান কত?
Options
1
2
Correct Answer
2
8
Correct Answer
3
0
Correct Answer
4
14
Correct Answer
Explanation
দেওয়া আছে, x² + y² = (x+y)² - 2xy => 4 = 2² - 2xy => 4 = 4 - 2xy => 2xy = 0 => xy = 0। এখন, x³ + y³ = (x+y)³ - 3xy(x+y) = 2³ - 3*0*2 = 8 - 0 = 8।
Actions
Type
Single Choice
Created By
admin@chakribidda.com