Expert Mathematics Chapter 2: Polynomials Class 10 Level 22

यदि ग्राफ के (x)-अक्ष कटान ((r-1,0)), ((r+2,0)), ((r+5,0)) हैं, तो शून्यकों का माध्य क्या है?

If the (x)-axis intersections of a graph are ((r-1,0)), ((r+2,0)), ((r+5,0)), what is the mean of the zeroes?

Explanation opens after your attempt
Correct Answer

A. (r+2)

Step 1

Concept

The mean is (\frac{(r-1)+(r+2)+(r+5)}{3}=r+2). Tip: take the average even for symbolic zeroes.

Step 2

Why this answer is correct

The correct answer is A. (r+2). The mean is (\frac{(r-1)+(r+2)+(r+5)}{3}=r+2). Tip: take the average even for symbolic zeroes.

Step 3

Exam Tip

माध्य (\frac{(r-1)+(r+2)+(r+5)}{3}=r+2) है। टिप: प्रतीकात्मक शून्यकों में भी औसत लें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. (r+2).

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