যদি m − n = 2 এবং m2 − n2 = 16 হয়, তবে (m + n) এর মান কত?
Solution
Correct Answer: Option A
আমরা জানি,
m2 − n2 = (m + n) (m - n)
⇒ (m + n) = m2 − n2/(m - n)
⇒ (m + n) = 16/2 = 8
∴ (m + n) = 8
m2 − n2 = (m + n) (m - n)
⇒ (m + n) = m2 − n2/(m - n)
⇒ (m + n) = 16/2 = 8
∴ (m + n) = 8
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