Ariel M.

asked • 09/22/16

Determine the x and y intercept.

y=x^2+4x+2

Kenneth S.

Michael, there's a lot of special characters available when you press the CAPITAL OMEGA key, specifically ±
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09/22/16

MICHAEL P.

Thanks, I will try that in the future!
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09/22/16

1 Expert Answer

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MICHAEL P. answered • 09/22/16

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Michael P. Math enthusiast

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The y-intercept is where x = 0; so, solving the equation yields y = 2. The x intercept is the point(s) where y = 0. So, we must solve the quadratic equation to find 2 points of x-intercept. Using the solution to quadratic equations, I calculated the 2 points on the x-axis at - 0.585 and -3.414.
x = [-b +/- SQRT(b^2 - {4}{a}{c})] / 2a
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