kokoronashi kokoronashi

24-08-2022
Mathematics

contestada

PLEASE HELP! 50 POINTS!! 9x-20+x² =?

Respuesta :

jaisurajk jaisurajk

24-08-2022

Answer: (x+4.5)^2-40.25

Step-by-step explanation:

x^2+9x-20=

x^2+9x+4.5^2-4.5^2-20=

x^2+9x+20.25-20.25-20=

(x+4.5)^2-20.25-20=(x+4.5)^2-40.25

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