एक टाइल मॉडल में \(x^2\), (-3x), (-7x), और (21) भाग हैं। यह किस गुणनफल को दिखाता है?
A tile model has parts \(x^2\), (-3x), (-7x), and (21). Which product does it represent?
Explanation opens after your attempt
Correct Answer
B. ((x-3)(x-7))correct product
Concept
((x-3)(x-7)=x-2-10x+21), and the parts show this. In exams two negative strips create a positive corner.
Why this answer is correct
The correct answer is B. ((x-3)(x-7)) / correct product. ((x-3)(x-7)=x-2-10x+21), and the parts show this. In exams two negative strips create a positive corner.
Exam Tip
((x-3)(x-7)=x-2-10x+21) और भाग इसी को दिखाते हैं। परीक्षा में दो ऋणात्मक पट्टियों से धनात्मक कोना बनता है।
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