a+b = 5 এবং a-b = 3 হলে ab এর মান কত?
Created: 1 year ago |
Updated: 10 months ago
best des
a + b = 5
a - b = 3
ab = (a+b/2)2 -(a-b/2)2
= (5/2)2 - (3/2)2
= 25/4 - 9/4
= 16/4
= 4
Given that,
a+b = 5 & a-b = 3
We know that,
ab = (a+b/2)2 - (a-b/2)2
= (5/2)2 - (3/2)2
= 25/4 - 9/4
= 16/4
= 4
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