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If (x+y+z=10) and (xy+yz+zx=28), what is (x power... |...
यदि (x+y+z=10) और (xy+yz+zx=28) हो तो \(x^2+y^2+z^2\) क्या है?
If (x+y+z=10) and (xy+yz+zx=28), what is \(x^2+y^2+z^2\)?
#three term identity
#given values
#sum of squares
A (44) / सही मान
B (100) / केवल योग का वर्ग
C (56) / केवल दोहरा गुणन
D (72) / घटाव गलत
Explanation opens after your attempt
Correct Answer
A. (44) / सही मान
Step 1
Concept
(100=x-2 +y-2 +z-2 +2(28)). Therefore \(x^2+y^2+z^2=44\).
Step 2
Why this answer is correct
The correct answer is A. (44) / सही मान. (100=x-2 +y-2 +z-2 +2(28)). Therefore \(x^2+y^2+z^2=44\).
Step 3
Exam Tip
(100=x-2 +y-2 +z-2 +2(28)) है। इसलिए \(x^2+y^2+z^2=44\) मिलता है।
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यदि (x+y+z=10) और (xy+yz+zx=28) हो तो \(x^2+y^2+z^2\) क्या है? / If (x+y+z=10) and (xy+yz+zx=28), what is \(x^2+y^2+z^2\)?
Correct Answer: A. (44) / सही मान. Explanation: (100=x-2 +y-2 +z-2 +2(28)) है। इसलिए \(x^2+y^2+z^2=44\) मिलता है। / (100=x-2 +y-2 +z-2 +2(28)). Therefore \(x^2+y^2+z^2=44\).
Which concept should I revise for this Mathematics MCQ?
(100=x-2 +y-2 +z-2 +2(28)). Therefore \(x^2+y^2+z^2=44\).
What exam hint can help solve this Mathematics question?
(100=x-2 +y-2 +z-2 +2(28)) है। इसलिए \(x^2+y^2+z^2=44\) मिलता है।
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