Question

What are the zeros of the polynomial function?

f(x)=x^2+9x+20

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Answer 1

First compute the discriminant delta:
9^2-4*1*20=1.
Using the quadratic formula, we get the solutions:

`(-9-1)/(2) =-5\\ (-9+1)/(2)=-4`
the solutions are then -4 and -5.