(ab+2a-5b-10) को समूहीकरण से गुणनखंडित करें।
Factorise (ab+2a-5b-10) by grouping.
Explanation opens after your attempt
D. ((a-5)(b+2))सही रूप
Concept
The grouping gives (a(b+2)-5(b+2)). In exams you may need to take a negative factor from the second group.
Why this answer is correct
The correct answer is D. ((a-5)(b+2)) / सही रूप. The grouping gives (a(b+2)-5(b+2)). In exams you may need to take a negative factor from the second group.
Exam Tip
समूह (a(b+2)-5(b+2)) बनता है। परीक्षा में दूसरे समूह से ऋणात्मक गुणनखंड निकालना पड़ सकता है।
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