Question
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Answer (Detailed Solution Below)
Option 1 : 20 / 20
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Detailed Solution
सही उत्तर 20 / 20 है।
Key Points
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prepsnap.in • Part -AQuestion:
If $a - b = 5$ and $a^2 + b^2 = 65$, find the value of $ab$. / यदि $a - b = 5$ और $a^2 + b^2 = 65$ हो, तो $ab$ का मान ज्ञात कीजिए।
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20 / 20
2.
25 / 25
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30 / 30
4.
40 / 40
Correct Answer: 20 / 20
$(a-b)^2 = 25 = 65 - 2ab$, so $ab = 20$. / $(a-b)^2 = 25 = 65 - 2ab$, अतः $ab = 20$।
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