कौन-सा व्यंजक \(3x^2-2x+5\) में \(-x^2+6x-9\) जोड़ने पर मिलता है?
Which expression is obtained by adding \(-x^2+6x-9\) to \(3x^2-2x+5\)?
Explanation opens after your attempt
A. \(2x^2+4x-4\)
Concept
Add like terms: \(3x^2-x^2=2x^2\), (-2x+6x=4x), and (5-9=-4).
Why this answer is correct
The correct answer is A. \(2x^2+4x-4\). Add like terms: \(3x^2-x^2=2x^2\), (-2x+6x=4x), and (5-9=-4).
Exam Tip
समान पद जोड़ें: \(3x^2-x^2=2x^2\), (-2x+6x=4x), और (5-9=-4)।
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