Question 1
- The graphs of are given in Fig. 2.10 below, for some polynomials . Find the number of zeroes of , in each case.

The number of zeroes of a polynomial is where its graph crosses the x-axis.
Step 1 — Understand zeroes
Let's look at the graphs. The zeroes are x-intercepts. These are points where . We count how many times the graph touches or crosses the x-axis.

Step 2 — Analyze graph (i)
The graph is a horizontal line. It is above the x-axis. It does not cross the x-axis.
Step 3 — Analyze graph (ii)
The graph is a curve. It crosses the x-axis at three points. These are distinct points.
Step 4 — Analyze graph (iii)
The graph is a curve. It crosses the x-axis at one point. This is a single point.
Step 5 — Analyze graph (iv)
The graph is a parabola. It crosses the x-axis at two points. These are distinct points.
Step 6 — Analyze graph (v)
The graph is a curve. It crosses the x-axis at four points. These are distinct points.
Step 7 — Analyze graph (vi)
The graph is a curve. It crosses the x-axis at three points. These are distinct points.
Answer
(i) 0 (ii) 3 (iii) 1 (iv) 2 (v) 4 (vi) 3