The expansion is \(25a^2-20ab+4b^2\), so like terms cancel and (-20ab) remains. Exam tip: watch the negative middle term.
Step 2
Why this answer is correct
The correct answer is B. (-20ab). The expansion is \(25a^2-20ab+4b^2\), so like terms cancel and (-20ab) remains. Exam tip: watch the negative middle term.
Step 3
Exam Tip
विस्तार \(25a^2-20ab+4b^2\) है इसलिए समान पद घटकर (-20ab) बचता है। परीक्षा में ऋणात्मक मध्य पद पर ध्यान दें।
Correct Answer: B. (-20ab). Explanation: विस्तार \(25a^2-20ab+4b^2\) है इसलिए समान पद घटकर (-20ab) बचता है। परीक्षा में ऋणात्मक मध्य पद पर ध्यान दें। / The expansion is \(25a^2-20ab+4b^2\), so like terms cancel and (-20ab) remains. Exam tip: watch the negative middle term.
Which concept should I revise for this Mathematics MCQ?
The expansion is \(25a^2-20ab+4b^2\), so like terms cancel and (-20ab) remains. Exam tip: watch the negative middle term.
What exam hint can help solve this Mathematics question?
विस्तार \(25a^2-20ab+4b^2\) है इसलिए समान पद घटकर (-20ab) बचता है। परीक्षा में ऋणात्मक मध्य पद पर ध्यान दें।
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