(3a-2-2ab+5b-2-\(2a^2+ab-4b^2\)) को सरल करने पर क्या मिलेगा?
What is obtained after simplifying (3a-2-2ab+5b-2-\(2a^2+ab-4b^2\))?
Explanation opens after your attempt
C. \(a^2-3ab+9b^2\)
Concept
Signs change in the subtracted bracket. The simplified form is \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\).
Why this answer is correct
The correct answer is C. \(a^2-3ab+9b^2\). Signs change in the subtracted bracket. The simplified form is \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\).
Exam Tip
घटाने वाले कोष्ठक के चिन्ह बदलते हैं। सरल रूप \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\) है।
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