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 \(3x^2-2x+5\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. \(2x^2+4x-4\)

Step 1

Concept

Add like terms: \(3x^2-x^2=2x^2\), (-2x+6x=4x), and (5-9=-4).

Step 2

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).

Step 3

Exam Tip

समान पद जोड़ें: \(3x^2-x^2=2x^2\), (-2x+6x=4x), और (5-9=-4)।

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Mathematics Answer, Explanation and Revision Hints

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 \(3x^2-2x+5\)?

Correct Answer: A. \(2x^2+4x-4\). Explanation: समान पद जोड़ें: \(3x^2-x^2=2x^2\), (-2x+6x=4x), और (5-9=-4)। / Add like terms: \(3x^2-x^2=2x^2\), (-2x+6x=4x), and (5-9=-4).

Which concept should I revise for this Mathematics MCQ?

Add like terms: \(3x^2-x^2=2x^2\), (-2x+6x=4x), and (5-9=-4).

What exam hint can help solve this Mathematics question?

समान पद जोड़ें: \(3x^2-x^2=2x^2\), (-2x+6x=4x), और (5-9=-4)।