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Mathematics

Grade-11

Easy

Question

Determine the solutions of the quadratic equation $x squared minus 8 x plus 16 equals 0$ . by inspecting the graph. Give answers correct to 1 decimal place where appropriate.

x = 0
x = 1, x = 2
x = 10
x = 4

The correct answer is: x = 4

The graph touches the x - axis at x = 4, so the solution is x = 4.

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