Respuesta :

wegnerkolmp2741o

Answer:

x=5    x=4

Step-by-step explanation:

y=x^2-9x+20

Set equal to zero

0 =x^2-9x+20

Factor

What two numbers multiply to 20 and add to -9

-5*-4 = 20

-5+-4 = -9

0=(x-5) (x-4)

Using the zero product property

x-5 =0    x-4 =0

x=5    x=4

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