\(a^2+b^2+c^2+2ab-2ac-2bc\) का गुणनखंड रूप क्या है?
What is the factorised form of \(a^2+b^2+c^2+2ab-2ac-2bc\)?
Explanation opens after your attempt
D. ( (a+b-c)2 )
Concept
This is the perfect square of (a), (b), and (-c). Exam tip: decide signs from (2ab), (-2ac), and (-2bc).
Why this answer is correct
The correct answer is D. ( (a+b-c)2 ). This is the perfect square of (a), (b), and (-c). Exam tip: decide signs from (2ab), (-2ac), and (-2bc).
Exam Tip
यह (a), (b), (-c) का पूर्ण वर्ग है। परीक्षा में (2ab), (-2ac), (-2bc) से चिन्ह तय करें।
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