(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
Correct Answer

C. \(a^2-3ab+9b^2\)

Step 1

Concept

Signs change in the subtracted bracket. The simplified form is \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\).

Step 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 \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\).

Step 3

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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(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-\(2a^2+ab-4b^2\))?

Correct Answer: C. \(a^2-3ab+9b^2\). Explanation: 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। / Signs change in the subtracted bracket. The simplified form is \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\).

Which concept should I revise for this Mathematics MCQ?

Signs change in the subtracted bracket. The simplified form is \(3a^2-2ab+5b^2-2a^2-ab+4b^2=a^2-3ab+9b^2\).

What exam hint can help solve this Mathematics question?

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।