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.
+308 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
