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| Math Central | Quandaries & Queries |
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Question from Sean, a student: How do I find the roots and describe the roots when graphing a parabola? y = - x^2 - 4x -3 |
Sean,
The "roots" are the x-intercepts. As with any x-intercept, we know that y = 0.
So you have:
0 = - x2 - 4x -3
which you can solve for x using factoring or the quadratic formula.
Cheers,
Stephen La Rocque.
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