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Mathematics — Standard (041) — CBSE Class 10 board question

Q1. [1] § 2.2 Geometrical Meaning of the Zeroes of a Polynomial § 2.4 Summary
The graph of $y = p(x)$ is given, for a polynomial $p(x)$. The number of zeroes of $p(x)$ from the graph is
  1. A 3
  2. B 1
  3. C 2
  4. D 0
Previously asked in CBSE board exam
2023 30/1/1 Q1
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Generated by claude-sonnet-4-6 · 2026-06-15 10:36 · grounding rag
Model Answer

Answer: (B) 1

The parabola touches the x-axis at exactly one point, so the number of zeroes of p(x) is 1.

Source: Chapter 2, Section 2.2 — Geometrical Meaning of the Zeroes of a Polynomial

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Explanation

The number of zeroes equals the number of points where the graph of y = p(x) intersects (or touches) the x-axis. A parabola that touches the x-axis at exactly one point (two coincident points — Case ii) gives one zero (repeated). If the graph lay entirely below the x-axis without touching, the answer would be 0. Students often confuse "touches" with "no zero" — touching still counts as one zero.

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