Respuesta :

jaaymiree

Answer:

Step-by-step explanation:

2

−

9

+

2

0

watsonultra2

Answer:

x²-9x+20

Step-by-step explanation:

(x±a)(x±b) = x²+Sx+P

[S = a+b

P = ab]

so (x-4)(x-5) = x²-9x+20

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