In this lesson, you will learn how to find the x-intercepts of a quadratic equation. By finding the values of A, B, and C, you can determine the components of the polynomial. Then, through factoring, you can find out which two numbers will multiply to give you your A times C value and add it to give you B. This will lead you to the equation x minus 4 times x plus 3 equals 0, which you can solve for to find the x-intercepts, which in this case are x equals 4 and x equals negative 3.
Finding the x intercepts of a quadratic equation
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Questions answered by this video:
What does finding the x-intercept of a quadratic equation mean ?
What must you do to find the x-intercepts of a quadratic equation ?
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It would be good to highlight the fact that at the x-intercept y=0.That is why the quadratic equation must be equated to zero.