किस विकल्प में \(-5x^2\) और \(8x^2\) के योग का सही परिणाम है?
Which option gives the correct sum of \(-5x^2\) and \(8x^2\)?
Explanation opens after your attempt
D. \(3x^2\)
Concept
The coefficients are (-5+8=3) and the variable part \(x^2\) remains the same. So the sum is \(3x^2\).
Why this answer is correct
The correct answer is D. \(3x^2\). The coefficients are (-5+8=3) and the variable part \(x^2\) remains the same. So the sum is \(3x^2\).
Exam Tip
गुणांक (-5+8=3) हैं और चर भाग \(x^2\) वही रहता है। इसलिए योग \(3x^2\) है।
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