Question

Which of the following quadratic equations has the solutions x=-20 and x=9? Show your work.

a) (x+20) (x-9)
b) (x-20) (x+9)
c) (x-5) (x-4)
d) x^2+11x-180
e) x^2-11x+180
f) x^2-9x+20

Answer 1

a) and d)
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