( (x+a)(x+b) ) का सामान्य प्रसार कौन सा है?
What is the general expansion of ( (x+a)(x+b) )?
Explanation opens after your attempt
D. (x-2+(a+b)x+ab)
Concept
The two cross terms (ax) and (bx) combine to form ((a+b)x). Exam tip: remember the constant term (ab).
Why this answer is correct
The correct answer is D. (x-2+(a+b)x+ab). The two cross terms (ax) and (bx) combine to form ((a+b)x). Exam tip: remember the constant term (ab).
Exam Tip
दो क्रॉस पद (ax) और (bx) मिलकर ((a+b)x) बनाते हैं। परीक्षा में स्थिर पद (ab) याद रखें।
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