a+b=5 এবং a-b=3 হলে ab এর মান কত?
Created: 6 years ago |
Updated: 11 months ago
দেওয়া আছে,
a + b = 5 এবং a - b = 3
আমরা জানি,
ab = {(a + b)2 - (a - b)2}÷4
= {52 - 32}÷4 [মান বসিয়ে]
= {25 - 9}÷4
= 16÷4
= 4
Md Azizur Rahman
Founder of Satt
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