किस आयत मॉडल में \(15x^2-2x-8\) के मध्य क्षेत्र (10x) और (-12x) के रूप में दिखाई देंगे?
In which rectangle model will the middle areas of \(15x^2-2x-8\) appear as (10x) and (-12x)?
Explanation opens after your attempt
Correct Answer
A. ((3x+2)(5x-4))grid
Concept
In ((3x+2)(5x-4)), the cells are \(15x^2\), (-12x), (10x), and (-8). In exams the sum of cross areas gives (-2x).
Why this answer is correct
The correct answer is A. ((3x+2)(5x-4)) / grid. In ((3x+2)(5x-4)), the cells are \(15x^2\), (-12x), (10x), and (-8). In exams the sum of cross areas gives (-2x).
Exam Tip
((3x+2)(5x-4)) में खाने \(15x^2\), (-12x), (10x), और (-8) हैं। परीक्षा में क्रॉस क्षेत्रों का योग (-2x) देता है।
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