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The x-intercepts of the parabola y = x^2 + bx + c are (-3,0) and (-5,0) Find the equation of the parabola, and submit your answer in y = x^2 + bx + c form.

 Apr 30, 2022
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The parabola factors like this, because it yields the above coordinates when y is 0:

y=(x+3)(x+5)

Expanding this, you get:

y=x²+8x+15

 Apr 30, 2022

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