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If (p-q=7) and (pq=18), choose the correct value... | A...
यदि (p-q=7) और (pq=18) हो तो \(p^2+q^2\) का सही मान चुनिए।
If (p-q=7) and (pq=18), choose the correct value of \(p^2+q^2\).
#correct value
#p square plus q square
#identity
A (67) / (pq) एक बार जोड़ा
B (85) / सही मान
C (49) / केवल अंतर का वर्ग
D (36) / केवल (2pq)
Explanation opens after your attempt
Correct Answer
B. (85) / सही मान
Step 1
Concept
(p-2 +q-2 =(p-q)2 +2pq=49+36=85). Exam tip: add (2pq).
Step 2
Why this answer is correct
The correct answer is B. (85) / सही मान. (p-2 +q-2 =(p-q)2 +2pq=49+36=85). Exam tip: add (2pq).
Step 3
Exam Tip
(p-2 +q-2 =(p-q)2 +2pq=49+36=85) है। परीक्षा में (2pq) जोड़ें।
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Mathematics Answer, Explanation and Revision Hints
यदि (p-q=7) और (pq=18) हो तो \(p^2+q^2\) का सही मान चुनिए। / If (p-q=7) and (pq=18), choose the correct value of \(p^2+q^2\).
Correct Answer: B. (85) / सही मान. Explanation: (p-2 +q-2 =(p-q)2 +2pq=49+36=85) है। परीक्षा में (2pq) जोड़ें। / (p-2 +q-2 =(p-q)2 +2pq=49+36=85). Exam tip: add (2pq).
Which concept should I revise for this Mathematics MCQ?
(p-2 +q-2 =(p-q)2 +2pq=49+36=85). Exam tip: add (2pq).
What exam hint can help solve this Mathematics question?
(p-2 +q-2 =(p-q)2 +2pq=49+36=85) है। परीक्षा में (2pq) जोड़ें।
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