To solve the equation graphically by finding x-intercepts. Confirm by using factoring the equation,
Given:
The equation is,
Concept Used:
- The x-intercept is given by y = 0: 0 = ax2 + bx + c. Isolating the square and then applying the square root property.
- The discriminant gives the number of x-intercepts of a quadratic function, because it gives us the number of solutions to ax2 + bx + c = 0.
Calculation:
Let y=0
So
The graph of
is shown below:
Since the graph intersects the x- axis at
Now solve by factoring method-
Both from graphically and factoring solution is same i.e
Thus, the solution of the given equation is
Chapter P Solutions
Precalculus: Graphical, Numerical, Algebraic Common Core 10th Edition
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