Use the graph to write down the roots of the equation $x^2 + 2x - 8 = 0$ - Junior Cycle Mathematics - Question a - 2012
Question a
Use the graph to write down the roots of the equation $x^2 + 2x - 8 = 0$.
The roots are: 2 and -4.
Worked Solution & Example Answer:Use the graph to write down the roots of the equation $x^2 + 2x - 8 = 0$ - Junior Cycle Mathematics - Question a - 2012
Step 1
Use the graph to find the roots
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Answer
From the graph provided, the points where the curve intersects the x-axis are the roots of the equation. Observing the graph, the roots can be identified as:
Root 1: x=2
Root 2: x=−4
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