Find the roots of the equation y = 3x² + x - 7.

Correct Answer is : 1.4 and -1.7

Correct Answer is : 1.4 and -1.7

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WAEC Mathematics 2025 Paper

Question : 21

Total: 50

^2

+ x - 7.

Solution:

Concept:

The roots of a quadratic equation are the

x

-values where its graph crosses the

x

-axis.

Explanation:

The equation is

y = 3x^2 + x - 7

On the given graph, the curve meets the

x

-axis at two points.

Reading the

x

-coordinates of these intersection points gives approximately

1.4

and

-1.7

These are the roots of the equation.

Answer:

Option A:

1.4

and

-1.7

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