Easy
1 point
ID: #28657
Question
a + b = √7, a - b = √3 হলে 5ab এর মান -
Options
1
√3
Correct Answer
2
√7
Correct Answer
3
5
Correct Answer
4
7
Correct Answer
Explanation
4ab = (a+b)² - (a-b)² = (√7)² - (√3)² = 7-3 = 4। বা, ab = 1। সুতরাং, 5ab = 5×1 = 5।
Actions
Type
Single Choice
Created By
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