Class 9 Mathematics - Introduction to Polynomials - Algebraic expressions Hard Quiz

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व्यंजक \(x^2+\frac{x}{x}\) को \(x\neq0\) पर सरल करने से क्या मिलता है?

What is obtained by simplifying \(x^2+\frac{x}{x}\) for \(x\neq0\)?

Explanation opens after your attempt
Correct Answer

B. \(x^2+1\)

Explanation

Simple Explanation

चूँकि \(x\neq0\) है, इसलिए \(\frac{x}{x}=1\) होगा। अतः \(x^2+\frac{x}{x}=x^2+1\)। विकल्प \(x^2+x\) गलत है, क्योंकि \(\frac{x}{x}\) का मान \(x\) नहीं, बल्कि 1 होता है। परीक्षा टिप: भिन्न में पदों को काटने से पहले सुनिश्चित करें कि हर शून्य नहीं है। / Because \(x\neq0\), \(\frac{x}{x}=1\). Therefore, \(x^2+\frac{x}{x}=x^2+1\). Option \(x^2+x\) is incorrect because \(\frac{x}{x}\) equals 1, not \(x\). Exam tip: before cancelling terms in a fraction, ensure that the denominator is non-zero.

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व्यंजक \(x^3+\frac{2x^2}{x}\) को \(x\neq0\) पर सरल करने से कौन सा रूप मिलता है?

Which form is obtained by simplifying \(x^3+\frac{2x^2}{x}\) for \(x\neq0\)?

Explanation opens after your attempt
Correct Answer

A. \(x^3+2x\)

Explanation

Simple Explanation

क्योंकि \(x\neq0\), इसलिए \(\frac{2x^2}{x}=2x^{2-1}=2x\) होगा। अतः व्यंजक \(x^3+2x\) बनता है। विकल्प \(x^2+2x\) में \(x^3\) को बिना कारण \(x^2\) में बदल दिया गया है। परीक्षा टिप: समान आधार वाली घातों के भाग में केवल विभाजित हो रहे पद की घातें घटाई जाती हैं। / As \(x\neq0\), \(\frac{2x^2}{x}=2x^{2-1}=2x\). Therefore, the expression becomes \(x^3+2x\). The option \(x^2+2x\) incorrectly changes \(x^3\) to \(x^2\). Exam tip: subtract exponents only within the term where powers of the same base are being divided.

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